金属外壳有各种各样的压敏排气孔。

This metal case has some kind of pressure-sensitive vent hole.

功率晶体管通常封装在金属外壳中加以保护。

The power transistors are generally encased in metal for protection.

它不断翻动和旋转，用更坚固的金属外壳保护自己。

Its body flips and spins, guarding itself with its altogether more sturdy metal casing.

他们有一个紧凑的金属外壳，可都在DIN导轨和壁挂式。

They have a compact metal housing and can be mounted both on DIN rails and on the wall.

该无线电的军标金属外壳可以使其潜入水下两米仍然正常工作。

The radio\'s Mil-Spec metal housing is submersible to two meters.