介绍了大口径过河钢管接口焊缝爆漏现象，以及湿法和干法水下焊接修复技术。
Both wet and dry underwater welding operations are presented to repair the burst at the welding seam of large size crossing steel pipe.
介绍了大口径过河钢管接口焊缝爆漏现象，以及湿法和干法水下焊接修复技术。
The text introduces the welding leak phenomena of large caliber pipe across river, and wet or dry welding repair technology below water.
研究了两种能应用于水下湿法焊接的缓冷方法。
Two methods for reducing cooling rate during underwater wet welding are studied.
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