左旋分子就是使偏振光发生左(即逆时针方向)旋的分子。
A left-handed molecule is one that causes polarised light to rotate to the left (ie, anticlockwise).
左：机器人向左旋转90度，并保持原先所在的格网位置不变。
Left: the robot turns left 90 degrees and remains on the current grid point.
组间比较两组1个月随访时在颈椎前屈、左屈、右屈、左旋、右旋5个方向的活动度变化值均有统计学意义（P<0.05）。
Compared between groups, cervical anteflexion, left and right lateral bending, left and right rotative activity showed significant difference at the 1 month after treatment(P<0.05).
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…
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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