学了烷烃,老师讲c和c之间是有角度的,�想问,为什么不能�现180度,c c 之间连成直线? 知乎 Template




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tomski学了烷烃,老师讲c和c之间是有角度的,�想问,为什么不能�现180度,c c 之间连成直线? coloring