Put the hard disk drive into the rack, and align the screws at the screw holes.
将硬碟机放入机架中，然后将螺丝对准螺丝孔。
Through analyzing the structure of plastics with inner screw, determined mold structure with gear and rack stripping screw mechanism.
通过对有内螺纹的塑件结构分析，确定采用齿轮齿条机构脱模的模具结构。
It is supposed to introduce the technology of gear-rack driven mechanism and nut-screw safety mechanism from Germany.
目前，三峡升船机引入德国技术，拟采用齿轮—齿条爬升机构、长螺母柱—短螺杆安全机构。
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