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- He held the test tube in his hand thoughtfully. 他沉思地把试管拿在手里。
- The test tube is closed at one end with a hydraulic seal. 试管的一端为水封所封闭。
- The solution in the test tube is boiling away. 试管里的溶液不住地沸腾着。
- Put some iron nails at the bottom of a test tube. 把一些铁钉放在试管的底部。
- He mixed chemicals in a test tube. 他把化学药品混合在试管里。
- He never held a test tube in his hand. 他手里从没拿过试管。
- Take care not to break the test tube! 当心别把试管打碎了。
- Take care not to break the test tube. 当心别把试管打碎了。
- The results indicate that orifice efficient water head is total water head and is not hydraulic head for uniform discharge along porous pipe. 结果表明,对沿途均匀泄流管道来说,其作用水头不能仅以压头为计算依据,而应以总水头为准。
- He demonstrated the principles with chemicals and test tubes. 他借助化学药品和试管讲解了这些原理。
- The definition of the performance measurement function is the average hydraulic head and root mean square error hydraulic head in the homogenous problem. 在均质问题中,定义执行度量函数为模拟水位平均值、模拟水位与观测水位平均值之均方根差值。
- He added a small amount of water into the test tube. 他往试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层流动时,因含水层之非均质性,使得垂直平均之饱和水力传导系数随地下水水位高低而变化。
- Take care not to let the gas in the test tube blow back. 当心别让试管里的气体爆炸。
- 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头压力的预测具有重要的实际意义。
- Then she poured the liquid out of the bottle into a test tube. 然后她把液体从瓶子里倒进一个试管。
- There is a green residue in the bottom of the test tube . 试管底部有绿色的沉淀。
- 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. 研究结果表明,该方法能适应克拉2气田异常高压环境,利用测试结果及其解释可以进行产能计算,为气田稳产提供产能评价;
- 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. 关于节能,主要介绍了在给水管网水头的利用方面,减压节流问题方面,生活与消防系统设置方面,水泵方面,开水供应方面的节能新方法、新技术。
- WHEN YOU BEAT OFF IN A TEST TUBE FOR YOUR SCIENCE PROJECT? 你射在一支试管里当作科学作业?