scrap down
... scrap end切头、切尾 scrap down切头损失 scrap drop废钢处理场、废钢场 ...
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采用本文推荐的改进的钢管减径速度制度，可较大地降低减径钢管前后的切头损失。
The application of the improved tube reduction speed system recommended in the paper makes it possible to greatly cut down the crop losses of the reduced pipes.
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