HEAD SEAL的意思|示意

The dark head of a seal bobbed up a few yards away.

在几码远处一只海豹的黑脑袋猛地钻出水面。

The seal's head falls forward onto the ice. Alatook gets to his feet and runs to the seal.

海豹的头朝前倒在冰上。阿拉图克站起来向海豹跑去。

The water pressure suppresses and the water stabs head is developed, and quick-change organization of the seal is analysised.

针对油压钳制水刺头结构复杂、油缸易漏油等缺点，设计开发了水压钳制水刺头，并对密封条的快换机构等进行了分析。

The described how a trained seal, named Henry, was able to indicate, with a twitch of its head, whether the fish moved to the right or to the left.

一只名叫亨利的海豹经过训练，只要晃动脑袋就能察觉出鱼往左游还是往右游。

This essay describes the application of the cylinder cram mechanism and the planetary gear system in the multi head anti stealing cover seal mechanism.

通过行星轮系-圆柱凸轮机构在多头防盗盖封口机中的应用，详细论述了其运动原理及设计要点。

When the closed channel, the wedge-shaped head with a stem to open up the ball and pressed to seal the valve seat.

当关闭通道时，用阀杆的楔形头使球体涨开与阀座压紧达到密封。