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2013-05-23 12:21
求翻译：(1) Take 2 pieces of electrical wire, each with a different color, and wrap one piece around the other to approximate a double helix. In this construct, each wire represents a sugar-phosphate backbone of a DNA molecule. Connect the light-colored ends and place it flat on the table.The axis around which the wires 是什么意思？ 待解决
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- 离问题结束还有
(1) Take 2 pieces of electrical wire, each with a different color, and wrap one piece around the other to approximate a double helix. In this construct, each wire represents a sugar-phosphate backbone of a DNA molecule. Connect the light-colored ends and place it flat on the table.The axis around which the wires
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