在法国拉斯科洞穴中发现了冰河时代晚期的绳索,这条绳索由向右旋转的纤维捆成,因此它是由右撇子编成的。
The late Ice Age rope found in the French cave of Lascaux consists of fibers spiraling to the right, and was therefore tressed by a righthander.
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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