ballast是什么意思

音标:英 ['bæləst]美 [ˈbæləst]

压载物, 压舱物[经] 底货, 压舱货

any heavy material used to stabilize a ship or airship
coarse gravel laid to form a bed for streets and railroads
an attribute that tends to give stability in character and morals; something that steadies the mind or feelings
an electrical device for starting and regulating fluorescent and discharge lamps

ballast的用法和例句：

1. When you set sail, my friend had his ear and you were ballast.

你们当初起航时 我的朋友是他的亲信 而你是个累赘

2. And now to give it the equivalent ballast of an engine.

现在为船加上发动机的重量

3. All you do is you add a little ballast to it, nice and evenly.

需要做的就是小心而均匀地加一些压舱物

4. We need something for ballast while we bolt down the engineering.

需要找到固定装置的时候 所需的压载物

5. ballast valves are jammed, which means it can't rise by itself.

压载阀卡住了 意味着它不能自行升起

6. To dive, the air is blown out of the ballast tanks which fill the water.

为了下潜 空气要从 装满水的压载仓中排出

7. The aft compartments are likely flooded from the damage, and our ballast pumps have no power.

尾舱可能因破裂被淹没了 压载泵也没电了

8. ballast tank, trim tank, reactor control, turbine control.

压载舱 装载舱 反应堆控制 汽轮机控制

9. First, we will need to decrease ballast and increase downward thrust.

首先 我们要减少压舱物 增加向下推力

10. The ballast would come out, and then it would float this, they would,of course, they would position it and then it would float out, without the aid of all this water.

把压舱物搬走 然后船会浮起来 他们肯定会掌握好位置 之后 如果没有渗水的话 这艘船就可以漂浮启程了