In this paper, the laser weld technology was applied to produce the welded joints of CLF-1, which is the primary material of manufacturing the TBM. After laser welding, the first welded joint kept the as-welded state, the second welded joint was treated at 710°C for 2h (abbreviation PWDT), the...

[Objective]To find out the situation of Nansha Coast Park point and non-point source pollution. [Method] By investigating the park water environment analysis of point and non-point source pollutants contribution rate, setting up water quality monitoring sites for basic data related indicators...