ballast中文什么意思

n.
1.镇重物，压载物，压舱物，底货(石、沙等)；(轻气球的)沙囊。
2.【铁路】道碴，道圆。
3.【电学】镇流电阻，镇流器。
+更多解释...4.使(性格)坚定的经验[道德等]，稳定因素；〔比喻〕沉着，稳定。
短语和例子
in ballast【航海】只装底货；只装(沙、石等)压舱物。vt.
在…上装压舱物[沙囊]；为(铁路等)铺道碴；使稳定，使沉着。n.
-ing
1.装底货，铺道碴。
2.压舱材料；道碴材料。

• ballast (to):    空载行驶
• be in ballast:    只装
• in ballast:    空载, 放空; 压舱货; 压载

例句与用法

更多例句：  下一页

1. Arc lamps require a current-limiting ballast .
   弧光灯需要一个限流镇流器。
2. The rail beds well on the ballast .
   铁轨在道碴上搁得很稳。
3. He furnished psychological ballast to a desperate president .
   他给一位在绝望中挣扎的总统提供了心理镇定剂。
4. The rails of the two tracks are supported on wooden ties resting on a ballast .
   两条线路的钢轨放置在有道碴承托的枕木上。
5. So are the motions of a little vessel without ballast tossed about on a stormy sea .
   在惊涛骇浪的大海上，一只没有压舱物的小船就是这样颠颠簸簸。

英文释义

名词

1. any heavy material used to stabilize a ship or airship
2. an electrical device for starting and regulating fluorescent and discharge lamps
   同义词：light ballast
3. a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
   同义词：ballast resistor, barretter
4. an attribute that tends to give stability in character and morals; something that steadies the mind or feelings
5. coarse gravel laid to form a bed for streets and railroads

动词

1. make steady with a ballast