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cored steel; hollow steel; drill steel (【技】一种断面多为圆形、正六角形,中心有通流体孔道的型钢。所使用的钢种主要是碳素中空钢及合金中空钢两大类,主要用来制造凿岩用的钎杆。); hollow-drill shank steel; hollow-drill steel | |||
hollow drill steel | |||
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hollow drill steel |
中空钢 : 11 phrases in 4 subjects |
Automobiles | 1 |
Metallurgy | 7 |
Rail transport | 1 |
Technology | 2 |