{"id":9837,"date":"2026-02-24T15:11:44","date_gmt":"2026-02-24T07:11:44","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d3420-2\/"},"modified":"2026-04-16T09:53:06","modified_gmt":"2026-04-16T01:53:06","slug":"astm-d3420","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/ko\/standard\/astm-d3420\/","title":{"rendered":"ASTM D3420"},"content":{"rendered":"<h2 class=\"wp-block-heading\">ASTM D3420\uc758 \uc774\ud574\uc640 \uc911\uc694\uc131<\/h2>\n\n\n\n<p>ASTM D3420\uc740 \ub110\ub9ac \uc778\uc815\ubc1b\ub294 \ud45c\uc900\uc73c\ub85c, \ub2e4\uc74c\uacfc \uac19\uc774 \uacb0\uc815\ud558\ub294\ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. <em data-start=\"507\" data-end=\"561\">\ud50c\ub77c\uc2a4\ud2f1 \ud544\ub984 \uc18c\uc7ac\uc758 \uc9c4\uc790 \ucda9\uaca9 \uc800\ud56d<\/em>. \uc774 \ud14c\uc2a4\ud2b8\ub294 \uc2e4\uc81c \ucda9\uaca9 \uc870\uac74\uc744 \uc2dc\ubbac\ub808\uc774\uc158\ud558\uc5ec \ud544\ub984\uc758 \uc778\uc131\uc744 \ud3c9\uac00\ud558\uba70, \ud2b9\ud788 \ud3ec\uc7a5, \uc758\ub8cc \ubc0f \uc18c\ube44\uc7ac\uc5d0 \uc801\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uac00\uc774\ub4dc\uc5d0\uc11c\ub294 \ub2e4\uc74c\uc744 \uc0ac\uc6a9\ud558\uc5ec \ud14c\uc2a4\ud2b8\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4. <strong data-start=\"760\" data-end=\"791\">\ud544\ub984 \uc9c4\uc790 \ucda9\uaca9 \uc2dc\ud5d8\uae30<\/strong>\uc640 \uac19\uc740 <strong data-start=\"805\" data-end=\"838\">Cell Instruments \ubaa8\ub378 <a href=\"https:\/\/www.packqc.com\/ko\/product-category\/pendulum-impact-tester\/\">PIT-01<\/a><\/strong>, \uc5d0 \ub300\ud55c \uc778\uc0ac\uc774\ud2b8\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. <strong data-start=\"871\" data-end=\"894\">\uc2a4\ud39c\uc11c \ucda9\uaca9 \ud14c\uc2a4\ud2b8<\/strong>, \uc808\ucc28, \uacc4\uc0b0 \ubc0f \ubcf4\uace0 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"ASTM D3420 \ud50c\ub77c\uc2a4\ud2f1 \ud544\ub984 \uc2dc\ud2b8\uc6a9 \uc9c4\uc790 \ucda9\uaca9 \uc2dc\ud5d8\uae30 \ucda9\uaca9 \uc2dc\ud5d8\uae30\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/vEx4esxMESw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p>\uc774\ub7ec\ud55c \ud14c\uc2a4\ud2b8 \ubc29\ubc95\uc740 \ud50c\ub77c\uc2a4\ud2f1 \ud544\ub984\uc758 \uc778\uc131\uacfc \ud488\uc9c8\uc744 \ud3c9\uac00\ud558\ub294 \ub370 \ub9e4\uc6b0 \uc911\uc694\ud558\uba70 \ud3ec\uc7a5 \ubc0f \uc2dd\ud488 \uc548\uc804 \ubd84\uc57c\ub97c \ube44\ub86f\ud55c \ub2e4\uc591\ud55c \uc0b0\uc5c5\uc5d0\uc11c \ub110\ub9ac \ucc44\ud0dd\ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud50c\ub77c\uc2a4\ud2f1 \ud544\ub984\uc758 \uc9c4\uc790 \ucda9\uaca9 \uc800\ud56d: \ud14c\uc2a4\ud2b8 \uac1c\uc694<\/h2>\n\n\n\n<p>\uc774 \ubc29\ubc95\uc740 <strong data-start=\"1643\" data-end=\"1665\">\uc5d0\ub108\uc9c0(\uc904 \ub2e8\uc704)<\/strong> \ubc18\uad6c\ud615 \uc9c4\uc790 \ud5e4\ub4dc\uac00 \uc6d0\ud615 \ud074\ub7a8\ud504 \uc0ac\uc774\uc5d0 \uace0\uc815\ub41c \ud544\ub984 \uc2dc\ud3b8\uc744 \ud30c\uc5f4\ud558\ub294 \ub370 \ud544\uc694\ud569\ub2c8\ub2e4. ASTM D3420\uc5d0\ub294 \ub450 \uac00\uc9c0 \uc808\ucc28\uac00 \ud3ec\ud568\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong data-start=\"1805\" data-end=\"1821\">\uc808\ucc28 A:<\/strong> 60mm \uc870\ub9ac\uac1c\uc640 25.4mm \uc9c1\uacbd\uc758 \uc784\ud329\ud2b8 \ud5e4\ub4dc\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong data-start=\"1884\" data-end=\"1922\">\uc808\ucc28 B(\uc2a4\ud39c\uc11c \uc601\ud5a5 \ud14c\uc2a4\ud2b8):<\/strong> 89mm \uc870\ub9ac\uac1c\uc640 19mm \uc9c1\uacbd\uc758 \uc784\ud329\ud2b8 \ud5e4\ub4dc\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p>\ub450 \uc808\ucc28 \ubaa8\ub450 \ubcf4\uc815\ub41c <strong data-start=\"2016\" data-end=\"2047\">\ud544\ub984 \uc9c4\uc790 \ucda9\uaca9 \uc2dc\ud5d8\uae30<\/strong> \ub97c \uc0ac\uc6a9\ud558\uc5ec \ucda9\uaca9 \uc2dc \uc804\ub2ec\ub418\ub294 \uc5d0\ub108\uc9c0\ub97c \uce21\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud544\ub984 \uc9c4\uc790 \ucda9\uaca9 \uc2dc\ud5d8\uae30 \uc124\uc815 \ubc0f \uc0ac\uc591<\/h2>\n\n\n\n<p>ASTM D3420\uc744 \ud6a8\uacfc\uc801\uc73c\ub85c \uc218\ud589\ud558\ub824\uba74 \ud45c\uc900\uc758 \uc7a5\uce58 \uc694\uad6c \uc0ac\ud56d\uc744 \uc900\uc218\ud558\ub294 \uc778\uc99d\ub41c \uc9c4\uc790 \ucda9\uaca9 \uc2dc\ud5d8\uae30\ub97c \uc0ac\uc6a9\ud558\uc138\uc694. Cell Instruments\u2019 <strong data-start=\"2308\" data-end=\"2324\">\ubaa8\ub378 <a href=\"https:\/\/www.packqc.com\/ko\/product-category\/pendulum-impact-tester\/\">PIT-01<\/a><\/strong> \ub294 \uc804\ubb38 \uc5f0\uad6c\uc2e4\uc5d0 \uc774\uc0c1\uc801\uc778 \uc120\ud0dd\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub2e4\uc591\ud55c \uc5d0\ub108\uc9c0 \ubc94\uc704 \uc635\uc158(0.5 ~ 5.0J)<\/li>\n\n\n\n<li>\uc544\ub0a0\ub85c\uadf8 \ub610\ub294 \ub514\uc9c0\ud138 \ud310\ub3c5<\/li>\n\n\n\n<li>\ubbf8\ub044\ub7ec\uc9d0\uc744 \ubc29\uc9c0\ud558\ub294 O\ub9c1 \ud074\ub7a8\ud504 \uc2dc\uc2a4\ud15c<\/li>\n\n\n\n<li>\ub2e4\uc591\ud55c \ud544\ub984 \uc720\ud615\uc5d0 \ub9de\uac8c \ud39c\ub4c8\ub7fc \ubb34\uac8c \uc870\uc808 \uac00\ub2a5<\/li>\n<\/ul>\n\n\n\n<p>\ucd5c\uc801\uc758 \uc815\ud655\ub3c4\ub97c \uc704\ud574:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc7a5\ube44\uc758 \uc218\ud3c9\uc774 \uc801\uc808\ud55c\uc9c0 \ud655\uc778\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uac01 \ud14c\uc2a4\ud2b8 \uc804\uc5d0 \ub2e4\uc774\uc5bc \ub610\ub294 \ub514\uc9c0\ud138 \ub208\uae08\uc744 \uc601\uc810 \uc870\uc815\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uae30\uc900\ubcc4 \ubcf4\uc815 \ud655\uc778 <a href=\"https:\/\/store.astm.org\/d3420-21.html\" target=\"_blank\" rel=\"noopener nofollow\">ASTM D1922<\/a> \ub610\ub294 \uc81c\uc870\uc5c5\uccb4\uc758 \uc9c0\uce68\uc744 \ub530\ub974\uc138\uc694.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud14c\uc2a4\ud2b8 \uacb0\uacfc \ubcf4\uace0<\/h2>\n\n\n\n<p>\ubcf4\uace0\uc11c\uc5d0\ub294 \ub2e4\uc74c \uc0ac\ud56d\uc774 \ud3ec\ud568\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc0d8\ud50c \uc2dd\ubcc4 \ubc0f \ud14c\uc2a4\ud2b8 \uc870\uac74<\/li>\n\n\n\n<li>\uc0ac\uc6a9\ub41c \uc808\ucc28(A \ub610\ub294 B)<\/li>\n\n\n\n<li>\ud14c\uc2a4\ud2b8\ud55c \ud45c\ubcf8 \uc218<\/li>\n\n\n\n<li><strong data-start=\"3672\" data-end=\"3701\">\ud3c9\uade0 \ucda9\uaca9 \uc5d0\ub108\uc9c0(J)<\/strong><\/li>\n\n\n\n<li>\ud3c9\uade0 \uc2dc\ud3b8 \ub450\uaed8<\/li>\n\n\n\n<li><strong data-start=\"3733\" data-end=\"3769\">\ud45c\uc900 \ud3b8\ucc28(\ud544\uc694\ud55c \uacbd\uc6b0)<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ub2e4\uc74c\uacfc \uac19\uc740 \ud658\uacbd \ub370\uc774\ud130\ub97c \uae30\ub85d\ud569\ub2c8\ub2e4. <strong data-start=\"3805\" data-end=\"3833\">\uc628\ub3c4 \ubc0f \uc2b5\ub3c4<\/strong> \ub294 \uc7ac\ud604\uc131\uc744 \uc704\ud574 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2a4\ud39c\uc11c \uc601\ud5a5 \ud14c\uc2a4\ud2b8 \uc2e4\uc2dc<\/h2>\n\n\n\n<p>\uadf8\ub9cc\ud07c <strong data-start=\"2790\" data-end=\"2813\">\uc2a4\ud39c\uc11c \ucda9\uaca9 \ud14c\uc2a4\ud2b8<\/strong> (\uc808\ucc28 B)\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ub354 \ub450\uaecd\uac70\ub098 \ub0b4\uad6c\uc131\uc774 \uac15\ud55c \ud544\ub984\uc5d0 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ub2e4\uc74c\uc740 \uac04\ub2e8\ud55c \ub2e8\uacc4\ubcc4 \uc124\uba85\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong data-start=\"2913\" data-end=\"2936\">\uc0c1\ud0dc \ud45c\ubcf8<\/strong> 23 \u00b1 2\u00b0C \ubc0f 50 \u00b1 10% RH.<\/li>\n\n\n\n<li><strong data-start=\"2969\" data-end=\"2990\">\ub450\uaed8 \uce21\uc815<\/strong> \ub9c8\uc774\ud06c\ub85c\ubbf8\ud130(\u00b10.00025mm)\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc815\ubc00\ud558\uac8c \uce21\uc815\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong data-start=\"3038\" data-end=\"3055\">\uc798\ub77c\ub0b4\uae30 \ubc0f \ub9c8\uc6b4\ud2b8<\/strong> 89mm \uc870\ub9ac\uac1c\uc640 O\ub9c1 \ud074\ub7a8\ud504\ub97c \uc0ac\uc6a9\ud558\ub294 \ud45c\ubcf8\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong data-start=\"3111\" data-end=\"3132\">\uc62c\ub9ac\uae30 \ubc0f \ub193\uae30<\/strong> \ub798\uce58 \uc704\uce58\uc5d0\uc11c \uc9c4\uc790\ub97c \uc6c0\uc9c1\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong data-start=\"3176\" data-end=\"3198\">\uad00\ucc30 \ubc0f \uae30\ub85d<\/strong> \ud544\ub984\uc744 \ud30c\uc5f4\ud558\uae30 \uc704\ud574 \ud761\uc218\ub41c \uc5d0\ub108\uc9c0\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong data-start=\"3243\" data-end=\"3281\">\ucd5c\uc18c 5\uac1c\uc758 \ud45c\ubcf8\uc5d0 \ub300\ud574 \ubc18\ubcf5\ud569\ub2c8\ub2e4.<\/strong> \ub97c \ud074\ub9ad\ud558\uace0 \ud3c9\uade0\uc744 \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"ASTM D3420 \ud50c\ub77c\uc2a4\ud2f1 \ud544\ub984 \uc2dc\ud2b8\uc6a9 \uc9c4\uc790 \ucda9\uaca9 \uc2dc\ud5d8\uae30 \ucda9\uaca9 \uc2dc\ud5d8\uae30\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/vEx4esxMESw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p><strong data-start=\"3310\" data-end=\"3356\">\uc808\ucc28 B\uc5d0 \ub300\ud55c \uc601\ud5a5 \uc5d0\ub108\uc9c0 \uacc4\uc0b0:<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em data-start=\"3360\" data-end=\"3379\">E = (R\/100) \u00d7 C<\/em><br data-start=\"3379\" data-end=\"3382\">Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em style=\"font-size: 16px;\" data-start=\"3393\" data-end=\"3396\">E<\/em> = \uc904 \ub2e8\uc704 \uc5d0\ub108\uc9c0<\/li>\n\n\n\n<li><em style=\"font-size: 16px;\" data-start=\"3420\" data-end=\"3423\">R<\/em> = \ub208\uae08 \ud310\ub3c5\uac12(0-100)<\/li>\n\n\n\n<li><em style=\"font-size: 16px;\" data-start=\"3452\" data-end=\"3455\">C<\/em> = \ud14c\uc2a4\ud130 \uc6a9\ub7c9(\uc608: 0.17, 0.34, 0.67J \ub4f1)<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\ucd5c\uace0\uc758 \uc9c4\uc790 \ucda9\uaca9 \uc2dc\ud5d8\uae30 \uc120\ud0dd\ud558\uae30<\/h2>\n\n\n\n<p>\uc815\ud655\ud55c \ud14c\uc2a4\ud2b8 <strong data-start=\"4573\" data-end=\"4619\">\ud50c\ub77c\uc2a4\ud2f1 \ud544\ub984\uc758 \uc9c4\uc790 \ucda9\uaca9 \uc800\ud56d<\/strong> ASTM D3420\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc740 \uae4c\ub2e4\ub85c\uc6b4 \ud658\uacbd\uc5d0\uc11c \uc7ac\ub8cc \uc131\ub2a5\uc744 \ubcf4\uc7a5\ud558\ub294 \ub370 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \uc124\uba85\ub41c \uc808\ucc28\ub97c \ub530\ub974\uace0 \ub2e4\uc74c\uacfc \uac19\uc740 \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \uae30\uae30\ub97c \uc0ac\uc6a9\ud558\uc5ec <strong data-start=\"4788\" data-end=\"4815\"><a href=\"https:\/\/www.packqc.com\/ko\/\">\uc140 \uc778\uc2a4\ud2b8\ub8e8\uba3c\ud2b8<\/a> PIT-01<\/strong>, \uc2e4\ud5d8\uc2e4\uacfc \uc81c\uc870\uc5c5\uccb4\ub294 \ub2e4\uc74c\uc744 \ub2ec\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <strong data-start=\"4852\" data-end=\"4908\">\ubc18\ubcf5 \uac00\ub2a5\ud558\uace0 \uc815\ud655\ud558\uba70 \ud45c\uc900\uc744 \uc900\uc218\ud558\ub294 \uacb0\uacfc \uc81c\uacf5<\/strong>. \uc774\ub97c \ud1b5\ud574 \uc81c\ud488 \uc548\uc804\uc744 \ubcf4\uc7a5\ud558\uace0 \ud3ec\uc7a5\uc758 \uc2e0\ub8b0\uc131\uc744 \ub192\uc774\uba70 \uad6d\uc81c \ud45c\uc900\uc744 \uc900\uc218\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\n\t\t\t\t\ubb38\uc758\ud558\uae30 ASTM D3420 \ud14c\uc2a4\ud2b8 \uc194\ub8e8\uc158 \ubc1b\uae30\t\t\t\t<\/h2>\n\n\n\n<p>ASTM D3420 \uc9c4\uc790 I\uc758 \uc774\ud574\uc640 \uc801\uc6a9<strong data-start=\"4289\" data-end=\"4316\">mpact \ud14c\uc2a4\ud2b8 \ubc29\ubc95<\/strong> \ub294 \uc2e4\uc81c \uc801\uc6a9 \ubd84\uc57c\uc5d0\uc11c \ud50c\ub77c\uc2a4\ud2f1 \ud544\ub984\uc758 \uc2e0\ub8b0\uc131\uacfc \uc548\uc804\uc131\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4. \uc804\ubb38\uac00\ub4e4\uc740 \uac15\ub825\ud55c \ud14c\uc2a4\ud2b8 \uc808\ucc28 \uae30\uc220\uc744 \ud1b5\ud574 \ud544\ub984\uc758 \ub0b4\ucda9\uaca9\uc131\uc744 \uc790\uc2e0 \uc788\uac8c \ud3c9\uac00\ud558\uc5ec \uc81c\ud488 \uac1c\uc120\uc744 \ucd94\uc9c4\ud558\uace0 \uace0\ud488\uc9c8 \ud45c\uc900\uc744 \uc720\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \ub0b4\uc6a9\uc740 <strong data-start=\"4646\" data-end=\"4673\">Cell Instruments PIT-01<\/strong> \ub610\ub294 \ub9de\ucda4\ud615 \ud14c\uc2a4\ud2b8 \uc694\uad6c \uc0ac\ud56d\uc5d0 \ub300\ud574 \ub17c\uc758\ud558\ub824\uba74 \uc9c0\uae08 \ubc14\ub85c \uae30\uc220\ud300\uc5d0 \ubb38\uc758\ud558\uc138\uc694!<\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D3420\uc758 \uc774\ud574\uc640 \uadf8 \uc911\uc694\uc131 ASTM D3420\uc740 \ud50c\ub77c\uc2a4\ud2f1 \ud544\ub984 \uc18c\uc7ac\uc758 \uc9c4\uc790 \ucda9\uaca9 \uc800\ud56d\uc744 \uce21\uc815\ud558\ub294 \ub370 \ub110\ub9ac \uc54c\ub824\uc9c4 \ud45c\uc900\uc785\ub2c8\ub2e4. \uc774 \ud45c\uc900\uc740 \uc2e4\uc81c \ucda9\uaca9 \uc870\uac74\uc744 \uc2dc\ubbac\ub808\uc774\uc158\ud558\uc5ec \ud544\ub984\uc758 \uc778\uc131\uc744 \ud3c9\uac00\ud558\uba70, \ud2b9\ud788 \ud3ec\uc7a5, \uc758\ub8cc \ubc0f \uc18c\ube44\uc7ac \ubd84\uc57c\uc5d0 \uc801\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uac00\uc774\ub4dc\ub294 \ud544\ub984 \uc9c4\uc790\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud14c\uc2a4\ud2b8\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc744 \uc124\uba85\ud569\ub2c8\ub2e4 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