化学家们在实验室合成有机化合物的时候，常常会得到一堆分子：一半右旋，一半左旋。
When chemists synthesize organic compounds in the lab, they often wind up with a mix of molecules: half are right-handed, and half are left.
轮烯类化合物的旋光性也遵循右螺旋右旋，左螺旋左旋的螺旋规律。
The optivity of annulene compounds abided by the helix law, that is, right handed helix is D-rotatory and left ha…
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