1、
Cold cathode sensing tubes are more rugged than the glass, hot-filament tubes.
冷阴极传感管比玻璃热丝管坚实.
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2、
Cold-cathode gages cannot be degassed as easily or as rapidly as hot-filament tubes.
冷阴极压力计不能像热丝管那样容易和迅速地排气.
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3、
Most photomultiplier tubes require anode-to-cathode potentials of from 1000 to 3000 V.
大多数光电倍增管都要求其阳极到阴极的电位在1000V到3000V之间.
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4、
A high-resistance wire or ribbon forming the cathode in some thermionic tubes.
丝极在一些电子管中形成阴极的高电阻的金属丝或金属带.
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