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- He held the test tube in his hand thoughtfully. 他沉思地把試管拿在手里。
- The test tube is closed at one end with a hydraulic seal. 試管的一端為水封所封閉。
- The solution in the test tube is boiling away. 試管里的溶液不住地沸騰著(zhù)。
- Put some iron nails at the bottom of a test tube. 把一些鐵釘放在試管的底部。
- He mixed chemicals in a test tube. 他把化學(xué)藥品混合在試管里。
- He never held a test tube in his hand. 他手里從沒(méi)拿過(guò)試管。
- Take care not to break the test tube! 當心別把試管打碎了。
- Take care not to break the test tube. 當心別把試管打碎了。
- The results indicate that orifice efficient water head is total water head and is not hydraulic head for uniform discharge along porous pipe. 結果表明，對沿途均勻泄流管道來(lái)說(shuō)，其作用水頭不能僅以壓頭為計算依據，而應以總水頭為準。
- He demonstrated the principles with chemicals and test tubes. 他借助化學(xué)藥品和試管講解了這些原理。
- The definition of the performance measurement function is the average hydraulic head and root mean square error hydraulic head in the homogenous problem. 在均質(zhì)問(wèn)題中，定義執行度量函數為模擬水位平均值、模擬水位與觀(guān)測水位平均值之均方根差值。
- He added a small amount of water into the test tube. 他往試管中加入了少量的水。
- While groundwater flows through an unconfined aquifer due to heterogeneity, the vertical average saturated hydraulic conductivity is a function of hydraulic head. 地下水流于非拘限含水層流動(dòng)時(shí),因含水層之非均質(zhì)性,使得垂直平均之飽和水力傳導系數隨地下水水位高低而變化。
- Take care not to let the gas in the test tube blow back. 當心別讓試管里的氣體爆炸。
- Hydraulic head pressure forecasting of water gushing for deep-lying Karst tunnel is of importance in engineering practice and the former evaluating methods is too rough. 摘要深埋隧道涌水最大水頭壓力的預測具有重要的實(shí)際意義。
- Then she poured the liquid out of the bottle into a test tube. 然后她把液體從瓶子里倒進(jìn)一個(gè)試管。
- There is a green residue in the bottom of the test tube . 試管底部有綠色的沉淀。
- Aim at monitoring production performance of Kela 2 gas field,well head test is done by using high precision electronic manometer in the gas field. 研究結果表明,該方法能適應克拉2氣田異常高壓環(huán)境,利用測試結果及其解釋可以進(jìn)行產(chǎn)能計算,為氣田穩產(chǎn)提供產(chǎn)能評價(jià);
- About energy economization, mainly introduced how new technologies and methods are used in utilizing of hydraulic head, decreasing pressure and quantity, setting of fire-fighting system, water pump, supplying of hot water etc. 關(guān)于節能，主要介紹了在給水管網(wǎng)水頭的利用方面，減壓節流問(wèn)題方面，生活與消防系統設置方面，水泵方面，開(kāi)水供應方面的節能新方法、新技術(shù)。
- WHEN YOU BEAT OFF IN A TEST TUBE FOR YOUR SCIENCE PROJECT? 你射在一支試管里當作科學(xué)作業(yè)?
