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- It must be controled the concentration of gas in colliery, for averting accidents. 為了避免事故的發(fā)生,必須控制礦井中的瓦斯濃度;
- When the concentration of organphosphorus was 0.091 mg/kg measured with the method of gas chromatography analysis, the expanded uncertainty was 0.0033mg/kg. 氣相色譜檢測甲基對硫磷濃度0.;091 mg/kg，擴展不確定度為0
- A whole tankful of gas dropped away because of the tiny leak. 由于這個(gè)小小的漏洞，整整一油箱的汽油都漏光了。
- When wine is fermented it gives off bubbles of gas. 酒發(fā)酵時(shí)會(huì )放出氣泡。
- In the system, a tunable dioxide laser is used as a sensor source, and the method of wavelength modulated is adopted, then concentration of gas is determined through detecting the generated second harmonic by opto-electronics converter. 用可調諧二極管激光作為傳感光源，采用波長(cháng)調制方法，通過(guò)對諧波信號進(jìn)行光電探測可得氣體濃度。
- There is a concentration of people in big cities. 大城市人口集中。
- There are several kinds of gas in the air. 空氣中有幾種氣體。
- A liter of gas has less mass than a liter of water. 一公升氣體的質(zhì)量少于一公升水的質(zhì)量。
- Any large release of NF3 would dissipate before significant concentrations of gas could build up in water. 在有意義的氣體濃度在水中能夠積累起來(lái)之前，任何大量釋放的NF3都已經(jīng)彌散了。
- In this paper, C language is made use of to calculate the concentration of the composite gases component according to opto acoustic effect and opto acoustic spectrum of gases. 文章根據氣體的光聲效應 ,利用氣體的光聲光譜對混合氣體各組份的濃度用C語(yǔ)言編程進(jìn)行計算
- Hearing the hiss of gas, he rushed in and turned it off. 聽(tīng)到煤氣的嘶嘶聲，他沖進(jìn)來(lái)把它關(guān)掉。
- Minimum explosion concentration of gas 甲烷爆炸下限濃度
- When wine is fermented, it gives off bubbles of gas. 酒發(fā)酵時(shí)發(fā)出氣泡。
- Chemists study the nature of gases. 有的化學(xué)家研究氣體的性質(zhì)。
- A whiff of gas will quickly put you off. 你吸一口麻醉氣體馬上就會(huì )進(jìn)入麻醉狀態(tài)。
- What is the concentration of salt in sea water? 海水中鹽的含量是多少?
- On our way to Shanghai yesterday we ran out of gas. 我們昨天去上海途中，車(chē)沒(méi)油了。
- He ran out of gas a mile from home. 他在離家還有一英里的地方把汽油用完了。
- S is the concentration of unpaired nucleotides. S是不配對的核苷酸的濃度。
- Air is a mixture, not a compound of gases. 空氣是氣體的混合物，不是化合物。
