CRT显示屏的阴极射线管，要么把包着管子的塑料外壳扒掉，其实挺简单的，要么直接从显示器外壳上的通风孔盖板走。
A cathode ray tube, CRT, you either remove the plastic housing around the tube, this is easy enough, or you work through the vent panels in the top of the housing.
阴极室底部呈漏斗状， 并设有一出料孔。
The bottom of the cathode chamber assumes a funnel shape and is provided with a discharge port.
钢带上的镍涂层属阴极性涂层，孔蚀是腐蚀的主要形式。
Nickel coatings on the steel strip are cathodal coatings, and the hole erode is the main erosion mode.
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