电缆的一端永久性连接在封闭的水银开关内，这个完整的密封总装形成完全不透水、抗撞击装置。
One end of the cable is permanently connected to the enclosed mercury switch and the entire assembly is encapsulated to form a completely watertight and impact resistant unit.
因此，这种TrueUnion结构使得人们可以用新的阀腔更换肮脏的阀门，新旧管接螺母能够互相配合，好像永久性连接着邻近的管道上。
Thus, the True union design permits the replacement of a fouled valve with a new body cartridge, which will fit the old union nuts that are likely to be permanently attached to adjacent piping.
虽然激光不会造成永久性伤害的因素意味着偶发性误瞄准的情况问题不大，但激光发射器同样可以与船载雷达连接以确保精确性。
It can also be linked to the ship's radar, for greater accuracy, though the fact that the laser does not cause permanent damage means that occasional mis-targeting will not matter too much.
它也非常适合于没有永久性Internet连接的组织。
It is also well suited to organizations that may not have permanent Internet connectivity.
光纤连接器主要用于实现光纤系统中设备与设备间、设备与仪表间、设备与光纤间以及光纤与光纤间的非永久性固定连接。
The optical fiber connector is used to realize the impermanent fixed connection between equipments, fiber and fiber, equipments and measuring instruments, equipments and optical fibers.
弹性施压零件是通过可拆的或永久性的连接固定于本体。
The elastic pressure element is fixed to the body by means of a detachable or permanent connection.
弹性施压零件是通过可拆的或永久性的连接固定于本体。
The elastic pressure element is fixed to the body by means of a detachable or permanent connection.
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