The effects of high temperature pre-precipitation on the stress corrosion properties of the heat affected zone were also studied after welding.
并研究了高温析出对焊接热影响区及后处理应力腐蚀性能的影响。
2
It is necessery that the total consumptive use of water in the rotation period is equal to the total effective precipitation(pre- cipitation minus runoff depth)in the loess hilly region.