They all had the same screw-and-nut mechanism.
结果发现：它们腿和身体连接的机制都像螺丝拧进螺母一样。
The beetles are the first animals found to have a screw-and-nut mechanism in their bodies.
人们也是第一次在这种甲虫身上看到动物有螺丝——螺母式的身体构造。
It looks like the beetles are using the screw-and-nut mechanism in the opposite way to humans, says Chris Lyal of the Natural History Museum in London.
甲虫组装身体时使用螺丝——螺母原理的方式和人类正好相反。
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。
The pressure mechanism, of which the forced direction is changed by a force transferring lever, consists of a pressure screw and a pressure nut.
加压机构由加压螺杆和加压螺母组成，并用传力杠杆改变受力方向；
Because the mechanism replaces a traditional screw rod and screw nut mechanism, the rotary furniture has simple structure, stable rotation and low cost.
用这种机构代替传统的螺杆螺母机构。可使旋转类家具结构简单，旋转平稳，成本降低。
Because the mechanism replaces a traditional screw rod and screw nut mechanism, the rotary furniture has simple structure, stable rotation and low cost.
用这种机构代替传统的螺杆螺母机构。可使旋转类家具结构简单，旋转平稳，成本降低。
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