释义 |
1 ?右旋壳 ... 右移褶皱,右旋褶皱 dextral fold 右旋壳 dextral shell 右旋走向滑动断层,右旋平移断层 dextral strike-slip fault ... 2 ?右旋贝壳 ... dextral displacement 右旋位移 dextral shell 右旋壳 ; 右旋贝壳 dextral fold 右移褶皱 ; ... 3 ?右旋螺 手持贝壳,壳顶向上,壳口面向自己,如果壳口在壳轴的右侧,则此贝壳称为右旋螺(Dextral shell);反之壳口在壳..
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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. 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。 。
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