... 电子枪设计 design of electron gun 电子枪阴极 block cathode; cathode of electron gun 读出电子枪 reading gun ...
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cathode block 阴极碳块
Cathode block materials 阴极块材料
block of cathode carbon 阴极炭块组
graphite cathode block 石墨阴极块
spent cathode carbon block 废旧阴极炭块
semi-graphited cathode carbon block 半石墨化阴极碳块
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