How to say vacuum tube voltmeter in Mandarin Chinese Pinyin

How to say vacuum tube voltmeter in Putonghua|Mandarin Chinese Pinyin

Useful Expressions or Words (English)	Chinese Pinyin & Chinese Symbol Translation	Sound
vacuum tube voltmeter	zhēn 真 kōng 空 guǎn 管 diàn 电 yā 压 biǎo 表

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