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| 型材 | |||
| 型钢 | |||
| 型钢 (Sectional steels include circular, square, rectangular, octagonal or semi-circular sections, and I, H, U, profiled sections and wide-flanged beams, etc. 型钢包括圆形、方形、矩形、八角形和半圆形断面型钢， I 形、 H 形和 U 形断面异形型钢以及宽缘工字钢等。) | |||
| 组合钻杆; 可拆卸钢钎 | |||
| sectional steel: 17 phrases in 6 subjects |
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