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ballast中文什么意思

发音:   用"ballast"造句
  • 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...
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例句与用法

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  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

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