英语词汇“源于”的读音、翻译、释义、用法及例句-智慧网

词汇	源于
释义	源于源于[yuányú]1.■root;
随便看	valve timing gear valve timing sign valve tip valve tool valve top cap valve tower valve train valve transmitter valve travel valve tray valve trigger control valve tube valve-type valve type valve type arrester valve-type instrument valve type piston valve type track circuit valve voltage drop valve voltage regulator valve voltmeter valve washer valve wattmeter valve with ball seat valve with conical seat

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