That is what a double helix looks like.
这就是二重螺旋线的形状。
Each messenger is an edited copy of one strand of the DNA double helix.
每个信使都是DNA双螺旋中一个单链的复制品。
Particularly when it comes to its structure — the stuff beyond the double helix.
尤其是对它结构(双螺旋线以外的结构)的研究。
Structure for the straight screw, single screw, a warhead double-helix single screw, twin screw three.
结构为直螺旋，有弹头单螺、双头单螺、双头双螺三种。
Structure for the straight screw, single screw, a warhead double-helix single screw, twin screw three.
结构为直螺旋，有弹头单螺、双头单螺、双头双螺三种。
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