英语词汇“p.p.m”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	p.p.m
释义	p.p.m abbr.百万分率；百万分之…parts per million
随便看	read out line read-out line read-out matrix readout memory read out memory readout meter readout method readout microscope readout noise read out noise level read-out noise level read out of read out of mechanical counters readout optical system read-out order Read out our fact sheets readout position read out position read-out position read out protection read out pulse readoutpunch unit read output read output signal readout register