基本解釋[環(huán)境科學(xué)技術(shù)]煙濃度計煙氣密度計英漢例句雙語例句This paper presented a new non-contact method to meter CO concentration and smoke optical density simultaneously and online based on photoacoustic technology.本文提出一種利用光聲技術(shù)同時在線測量CO濃度和煙霧消光的非接觸式方法。smoke density meter更多例句專業(yè)釋義環(huán)境科學(xué)技術(shù)煙濃度計煙氣密度計