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可以定做各种管坯及无缝钢管。
Can be customized and seamless steel tubes of various tube.
youdao
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介绍了一种新型管坯成型方法——反弯成型法。
A new hollow shell formation method, the reverse bending process, is presented.
youdao
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介绍了一种新型管坯成型方法——反弯成型法。
A new hollow shell formation method, the reverse bending process, is presented.
youdao