"\uB808\uB9CC \uBD88\uC5F0\uC18D\uBA74 \uC9C0\uAD6C\uC758 \uB0B4\uD575\uACFC \uC678\uD575 \uC0AC\uC774\uC758 \uBD88\uC5F0\uC18D\uBA74\uC744 \uC9C0\uCE6D\uD55C\uB2E4. \uD575\uC740 \uC9C0\uC9C4\uACC4\uAC00 \uBC1C\uB2EC\uD568\uC5D0 \uB530\uB77C \uB450 \uBD80\uBD84\uC73C\uB85C \uAD6C\uC131\uB418\uC5B4 \uC788\uC74C\uC774 \uBC1D\uD600\uC84C\uB2E4. 1936\uB144 \uB374\uB9C8\uD06C \uC9C0\uC9C4\uD559\uC790 \uB808\uB9CC\uC740 \uB274\uC9C8\uB79C\uB4DC\uC758 \uBD88\uB7EC \uC9C0\uBC29 \uADFC\uCC98\uC5D0\uC11C \uBC1C\uC0DD\uD55C \uC9C0\uC9C4 \uAE30\uB85D\uC744 \uBD84\uC11D\uD558\uC5EC \uC554\uC601\uB300 \uB0B4\uC758 110\uB3C4 \uBD80\uADFC\uC5D0 \uC57D\uD55C P\uD30C\uAC00 \uB3C4\uB2EC\uD558\uB294 \uAC83\uC744 \uBC1C\uACAC\uD558\uC5EC \uAE4A\uC774 5100km \uBD80\uADFC\uC5D0 \uBD88\uC5F0\uC18D \uBA74\uC774 \uC874\uC7AC\uD568\uC744 \uC8FC\uC7A5\uD558\uC600\uB2E4. \uC774\uAC83\uC744 \uADFC\uAC70\uB85C \uD575\uC740 \uC561\uCCB4 \uC0C1\uD0DC\uC778 \uC678\uD575\uACFC \uACE0\uCCB4\uC0C1\uD0DC\uC758 \uB0B4\uD575\uC758 \uB450\uBD80\uBD84\uC73C\uB85C \uAD6C\uC131\uB418\uC5B4 \uC788\uC73C\uBA70, \uC774\uB4E4 P\uD30C\uB294 \uB0B4\uD575\uC758 \uD45C\uBA74\uC5D0\uC11C \uBC18\uC0AC\uB418\uC5C8\uAC70\uB098 \uAD74\uC808\uB418\uC5B4 \uC628 \uAC83\uC73C\uB85C \uC124\uBA85\uD558\uC600\uB2E4. \uCC38\uACE0\uB85C \uC678\uD575\uC758 \uBC00\uB3C4\uB294 9.9~12.2g/cm3\uC774\uBA70 \uB0B4\uD575\uC758 \uBC00\uB3C4\uB294 12.8~13.1g/cm3\uC774\uB2E4."@ko . "\uB808\uB9CC \uBD88\uC5F0\uC18D\uBA74"@ko . . "\uB808\uB9CC \uBD88\uC5F0\uC18D\uBA74 \uC9C0\uAD6C\uC758 \uB0B4\uD575\uACFC \uC678\uD575 \uC0AC\uC774\uC758 \uBD88\uC5F0\uC18D\uBA74\uC744 \uC9C0\uCE6D\uD55C\uB2E4. \uD575\uC740 \uC9C0\uC9C4\uACC4\uAC00 \uBC1C\uB2EC\uD568\uC5D0 \uB530\uB77C \uB450 \uBD80\uBD84\uC73C\uB85C \uAD6C\uC131\uB418\uC5B4 \uC788\uC74C\uC774 \uBC1D\uD600\uC84C\uB2E4. 1936\uB144 \uB374\uB9C8\uD06C \uC9C0\uC9C4\uD559\uC790 \uB808\uB9CC\uC740 \uB274\uC9C8\uB79C\uB4DC\uC758 \uBD88\uB7EC \uC9C0\uBC29 \uADFC\uCC98\uC5D0\uC11C \uBC1C\uC0DD\uD55C \uC9C0\uC9C4 \uAE30\uB85D\uC744 \uBD84\uC11D\uD558\uC5EC \uC554\uC601\uB300 \uB0B4\uC758 110\uB3C4 \uBD80\uADFC\uC5D0 \uC57D\uD55C P\uD30C\uAC00 \uB3C4\uB2EC\uD558\uB294 \uAC83\uC744 \uBC1C\uACAC\uD558\uC5EC \uAE4A\uC774 5100km \uBD80\uADFC\uC5D0 \uBD88\uC5F0\uC18D \uBA74\uC774 \uC874\uC7AC\uD568\uC744 \uC8FC\uC7A5\uD558\uC600\uB2E4. \uC774\uAC83\uC744 \uADFC\uAC70\uB85C \uD575\uC740 \uC561\uCCB4 \uC0C1\uD0DC\uC778 \uC678\uD575\uACFC \uACE0\uCCB4\uC0C1\uD0DC\uC758 \uB0B4\uD575\uC758 \uB450\uBD80\uBD84\uC73C\uB85C \uAD6C\uC131\uB418\uC5B4 \uC788\uC73C\uBA70, \uC774\uB4E4 P\uD30C\uB294 \uB0B4\uD575\uC758 \uD45C\uBA74\uC5D0\uC11C \uBC18\uC0AC\uB418\uC5C8\uAC70\uB098 \uAD74\uC808\uB418\uC5B4 \uC628 \uAC83\uC73C\uB85C \uC124\uBA85\uD558\uC600\uB2E4. \uCC38\uACE0\uB85C \uC678\uD575\uC758 \uBC00\uB3C4\uB294 9.9~12.2g/cm3\uC774\uBA70 \uB0B4\uD575\uC758 \uBC00\uB3C4\uB294 12.8~13.1g/cm3\uC774\uB2E4."@ko . .