英语词汇“vacuum valve”的释义、用法及例句-英汉词典

词汇	vacuum valve
释义	vacuum valve <<名词>> = vacuum tube 真空管
随便看	secret secret agent secretaire secretarial secretariat secretary secretary bird secretary-general secretary-ship secrete secrete secretion secretion secretive secretory secret police secret service secret society sect sect sectarian sectarianism sectary section sectional

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