ballast中文

n.
1.鎮重物，壓載物，壓艙物，底貨(石、沙等)；(輕氣球的)沙囊。
2.【鐵路】道碴，道圓。
3.【電學】鎮流電阻，鎮流器。
+更多解釋...4.使(性格)堅定的經驗[道德等]，穩定因素；〔比喻〕沉著，穩定。
短語和例子
in ballast【航海】只裝底貨；只裝(沙、石等)壓艙物。vt.
在…上裝壓艙物[沙囊]；為(鐵路等)鋪道碴；使穩定，使沉著。n.
-ing
1.裝底貨，鋪道碴。
2.壓艙材料；道碴材料。

• ballast (to):    空載行駛
• be in ballast:    只裝
• in ballast:    空載, 放空; 壓艙貨; 壓載

例句與用法

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1. Arc lamps require a current-limiting ballast .
   弧光燈需要一個限流鎮流器。
2. The rail beds well on the ballast .
   鐵軌在道碴上擱得很穩。
3. He furnished psychological ballast to a desperate president .
   他給一位在絕望中掙扎的總統提供了心理鎮定劑。
4. The rails of the two tracks are supported on wooden ties resting on a ballast .
   兩條線路的鋼軌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 .
   在驚濤駭浪的大海上，一只沒有壓艙物的小船就是這樣顛顛簸簸。

英文釋義

名詞

1. any heavy material used to stabilize a ship or airship
2. an electrical device for starting and regulating fluorescent and discharge lamps
   同義詞：light ballast
3. a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
   同義詞：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

动詞

1. make steady with a ballast