英语词汇“parts per billion”的读音、翻译、释义、用法及例句-智慧网

词汇	parts per billion
释义	parts per billionparts per billion1.■十亿分率
随便看	vertical magnetic field vertical magnetic recording vertical magnetic recording head vertical magnetism vertical magnetometer vertical management vertical mandrel vertical margin vertical matress suture vertical mattress suture vertical member vertical merger vertical merger vertical microprogramming vertical migration vertical mill vertical miller vertical milling and boring machine vertical milling head vertical milling machine vertical misalignment vertical missing vertical mixer vertical mode vertical motion

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