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- duplex steam pistom pump 双缸蒸汽往复泵
- duplex steam piston pump 双缸蒸汽活塞泵
- duplex steam pump 双缸汽动泵
- The steam tug takes canal boats and barges in tow. 驳船后面拖着小艇和平底船。
- The mirror fogged up with the steam. 镜子因蒙上水气而模糊不清。
- The engines are driven by steam. 这些发动机是由蒸汽驱动的。
- Parents must let children blow off steam sometimes. 做父母的有时必须让孩寸们吵吵闹闹，发泄发泄。
- The movement continued to pick up steam. 这场运动继续在加速进行。
- In1768 the first steam engine appeared. 在1768年出现了第一部蒸汽机。
- When water boils it turns into steam. 水沸腾而变成蒸汽。
- A tyre expands when you pump air into it. 轮胎一打气就鼓起来。
- Ice, snow and steam are different forms of water. 冰、雪和蒸汽是水的不同形态。
- The steam has fogged the mirror. 水汽布满了镜子。
- The steam escaped with a loud hissing noise. 蒸汽发出很大的嘶嘶声冒了出 来。
- Lashing velocity of pump is concerned with nature of air. 泵的抽气速率与气体的性质有关。
- They kept up a good head of steam. 他们把蒸气压力保持在所需的水平上。
- Heat evaporates water into steam. 水受热变成水蒸汽。
- This tire is flat; you didn't pump enough air in. 这个轮胎没气了;你并没打足气。
- Steam condenses into water when cooling down. 蒸汽冷却时凝结成水。
- We have a pump for drawing water from the well. 我们用一个水泵从井里抽水。
