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| 多层焊阶梯形山形焊接次序 | |||
| 阶梯形多层焊方法 | |||
| 级联序列 (分生) | |||
| 重叠焊层沉积顺序; 串列顺序; 串级叠置法 | |||
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cascade sequence : 1 phrase in 1 subject |
| Technology | 1 |
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