负极的英文：
cathode
The negative poles of two magnets will repel each other.
两块磁铁的负极相互排斥。
In electrochemical machining, the tool is the cathode and the workpiece is the anode.
在电化切削时,刀具是正极,工具是负极。
"The pole of the output voltage is connected to the balance housing, which can be grounded for operation."
输出电压的负极与电子天平壳体连接。在进行操作时,电子天平壳体允许接地。
n. （电池等的）阴极，负极
The measuring cell consists of an insulated silver cathode
测量电池是由绝缘的银阴极组成的。
The phosphorescent coating on the inside of the screen of a cathode - ray tube.
磷光质涂层在阴极射线管的屏幕内部上的磷光质涂层
Rontgen was certain that the fluorescent effect was not due to cathode rays.
伦琴确信，荧光效应不是起因于阴极射线。
The amount of information that a cathode ray tube screen displays.
阴极射线管屏幕所显示的信息总量。
The cathode rays are always beamed on a fresh area of the anode surface
阴极射线总是射向阳极表面的新区域。