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- air test tube aging 空气试管老化
- He held the test tube in his hand thoughtfully. 他沉思地把试管拿在手里。
- test tube aging 试管加热老化试验
- 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。
- 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。
- Manual weldings of watertight joints shall be painted after the air test. 手工焊接水密接合应该在气密试验后进行喷漆.
- He added a small amount of water into the test tube. 他往试管中加入了少量的水。
- 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。
- From the report how to identify indoor air testing authority? 从室内空气检测报告上如何辨权威?
- 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。
- The test tube is closed at one end with a hydraulic seal. 试管的一端为水封所封闭。
- Be sure to label all the test tubes . 一定要把所有的试管都贴上标签。
- Hans's just been over to check on this one between manhole 6 and manhole 7.We did an air test on it.Er----I'm afraid it's leaking a bit. 汉斯刚来检查了6号检查井和7号检查井之问的那段管道。做了一次压力试验。唉，恐怕有些漏。
- 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?
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
