Are power hubs, electrical control stations, fuse boxes lockable?

电线插孔、电力控制站和保险丝盒子是否可以上锁？

Grey-blue brushed steel containers are topped with lockable caps.

灰蓝色的磨砂钢制容器顶部上锁的帽子。

Lockable gas springs can be locked anywhere along the complete stroke.

可控气弹簧在整个行程的任何位置都可以锁定.

Back focus adjustment is easy with the lockable thumb wheel, accessible from the top or bottom of the camera.

回到重点调整很容易与上锁的拇指滚轮，可从顶部或底部的相机。