而阴极则是无害的贮氢合金而非有害的镉。
The cathode, however, is composed of a harmless hydrogen-absorbing alloy instead of toxic cadmium.
阀杆应该是以镀镉钢合金或316不锈钢作为标准配置。备选的阀杆材料可以根据要求提供，例如，钛，不锈钢，等等。
The shaft shall be cadmium-plated steel alloy or 316 stainless steel as standard equipment. Optional shaft materials shall be available on request, i. e. , titanium, stainless steel, etc.
镉离子主要来源于电镀、电池、合金制造、颜料、采矿与选矿行业排放的工业废水。
Cadmium ion mainly comes from industrial waste water discharged by electroplating, battery, alloy manufacturing, pigment, mining and refining process.
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