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- thermionic tube voltmeter 热离子管伏特计
- 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
- plate-detection type vacuum tube voltmeter 板极检波真空管电压表
- high sensitive vacuum tube voltmeter 高灵敏度真空管电压表
- very high frequency vacuum tube voltmeter 甚高频电子管伏特表
- a thermionic tube having two electrodes; 有两个电极的热离子管；
- ultra-short wave vacuum tube voltmeter 超短波真空管电压表
- probe-type vacuum tube voltmeter 探针式电子管电压表
- direct current vacuum tube voltmeter 直流真空管电压表
- probe type vacuum tube voltmeter 探针式真空管电压表
- standard compensation type vacuum tube voltmeter 标准补偿式电子管电压表
- slide-back vacuum tube voltmeter 偏压补偿式电子管伏特计
- a thermionic tube having two electrodes; used as a rectifier. 有两个电极的热离子管；作用相当于调整器。
- wide-range vacuum tube voltmeter 宽量程真空管电压表
- A display device that uses a cathode ray tube. 一种使用阴极射线管的显示装置。
- He held the test tube in his hand thoughtfully. 他沉思地把试管拿在手里。
