... 右手螺旋 right handed screw 右旋螺旋 right-handed thread 刚体 rigid body ...
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右旋螺旋桨 right handed screw ; clockwise propeller ; right handed propeller ; [航] right hand airscrew
右旋螺旋线 right-hand helix
右旋螺旋桨右旋螺钉 right handed screw
右旋螺旋轴 right handed screw axis
右旋单螺旋桨 right turning single screw
左右反向旋转螺旋桨 handed propeller
右旋/左旋螺旋桨 Right-hand/left-hand propeller
右旋输送螺旋 right-hand open-end auger
大多数螺旋形的蜗牛主要是右旋的。
然而，一些卵壳中会出现反向螺旋的蜗牛，多数情况下是在左旋卵壳中，右旋的出生率惊人地高。
However, some broods possess a few snails of the opposing hand, and in predominantly sinistral broods, the incidence of dextrality is surprisingly high.
然而现在已经变为右旋占多数的蜗牛种类，其旋向性（壳的螺旋方向）一度也曾均衡分布，在某些种类中，甚至左旋曾占优势。 。
Butt at one time, handedness (twist direction of the shell) was equally distributed within some snail species that have become predominantly dextral or, in a few species, predominantly sinistral.
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