您要查找的是不是：
- However, these evidences are appreciably minished after pre pressuring the specimens. 但预压后的泡沫钼吸能量和吸能效率均有所下降。
- Experimental Study on Vacuum Pre - cooling for Chinese Cabbages'Weight Loss 结球白菜干耗的真空预冷实验研究
- Sealed under low pressure or a partial vacuum. 抽空密封的在低压或部分真空状态下密封起来的
- Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸尘器都是借吸力工作的。
- The pressure in the vacuum is too low. 真空度太小。
- His wife's death left him a vacuum in his life. 他妻子的去世使他的生活变得空虚。
- For pressure and vacuum operation. 用于压力及真空操作。
- The beer comes out of the barrel under pressure. 啤酒受到压力从桶中流出。
- Her husband's death left a vacuum in her life. 她丈夫的死使她的生活变得空虚。
- Some people are living in a vacuum. 有些人过着与世隔绝的生活。
- Our pressure vessel is licensed product. 我厂生产的压力容器是授权生产产品。
- A vacuum cleaner is a handy household tool. 吸尘器是一种使用方便的家庭用具。
- Loss of pressure had not registered on the dials. 刻度盘未记录压力下降。
- The shop repairs vacuum cleaners. 这家店修理吸尘器。
- The porter turned off the vacuum. 清洁工关掉真空吸尘器。
- Air pressure forces the water through the pipe. 空气压力使水通过管道。
- What's the atmospheric pressure today? 今天的气压怎么样？
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- The water pressure may need adjusting. 水压可能需要调整。
- Pressure is force per unit area. 压力就是电单位面积上的力。
