thermionic tube

常见例句

• 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
• a thermionic tube having five electrodes.
  有五个电极的热离子管。
• a thermionic tube having four electrodes.
  有四个电极的热离子管。
• a thermionic tube having three electrodes.
  有三个电极的热离子管。
• 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
• a thermionic tube having two electrodes;
  有两个电极的热离子管；
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