ballasting
n. 压舱材料, 道碴材料
词形变化
ballastings
复数
ballastings
释义与例句
n.
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1.
That which is used for steadying anything; a ballast.
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2.
The application of a ballast to a railway line.
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3.
The addition of a ballast to a ship.
v.
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1.
present participle and gerund of ballast