您要查找的是不是：
- Knowledge of designing mechanical seal on decompression tower bottom pump 减压塔底泵机封设计的几点体会
- Measures to prevent steam etching in bottom pump of pressure reducing vessel 减压塔底泵防止汽蚀现象的改进措施
- They sent the enemy ship to the bottom of the sea. 他们把敌舰击沉。
- The child was sitting on the bottom stair. 那孩子正坐在楼梯最下面的一级上。
- I intend to get to the bottom of it. 这件事我打算寻根究底。
- He was always bottom of the class in maths. 他的数学成绩在班上总是垫底。
- The dregs have settled at the bottom of the bottle. 渣滓都沉到瓶底了。
- Bell bottoms were a fashion must in the late 1960s. 喇叭裤是一九六○年代末期时装流行不可缺的。
- A tyre expands when you pump air into it. 轮胎一打气就鼓起来。
- I fell right to the bottom of the stairs. 我从楼梯上一直摔到楼梯下面。
- The police found a body at the bottom of the lake. 警方在湖底发现了一具尸体。
- His bottom waggle in a funny way when he walk. 他走路时臀部扭来扭去，很可笑。
- Lashing velocity of pump is concerned with nature of air. 泵的抽气速率与气体的性质有关。
- The bottom of the boat was rusty. 船底生锈了。
- This tire is flat; you didn't pump enough air in. 这个轮胎没气了;你并没打足气。
- We have a pump for drawing water from the well. 我们用一个水泵从井里抽水。
- There is a pair of scissors in the bottom drawer. 最底下的抽屉里有把剪刀。
- The heart is analogous to a pump. 心脏和水泵有相似之处。
- Prices have reached rock bottom. 价格已经到了最低点。
- Every indication show market get near bottom now. 所有迹象表明，目前市场价格已跌落低谷。
