A second cable assembly includes a second pinion gear mounted for rotational movement in the housing.
第二线缆组件包括：第二小齿轮，其被安装来在所述外壳内做旋转运动；
A first and a second part of the injection device are adapted to perform a relative rotational movement with respect to each other.
注射装置的第一和第二部分适于相对彼此进行相对旋转运动。
Objective: To study the clinical significance of axis transverse foramen in the etiology of the vertebral artery insufficiency after cervical rotational movement.
目的：探讨枢椎横突孔结构在转头引起寰枢段椎动脉狭窄或闭塞的临床解剖学意义。
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