熔丝

The results showed that single power source twin-wire submerged arc welding, which is one of alternative methods of submerged arc welding with high deposition rate, low heat input, can cater for manufactural demands of big diametrical full welding ball-valve's manufacturing.

结果表明，单电源双丝自动埋弧焊熔敷率高、热输入低，可满足大直径全焊接阀体球阀的制造要求。

Lateral oscillation arc welding, high-speed-rotating arc welding, twin-wire welding, and ultra NGW can all assure the fusion of side wall and improve the oppearance of weld in relatively small welding variables.

横向摆动电弧、高速旋转电弧、双丝焊和超窄间隙焊4类方式都可以在较小的焊接规范下，保证侧壁熔合，改善焊缝成形，防止焊接裂纹。

20Mm deep for one single-wire submerged arc welding without groove.

单丝埋弧焊不开坡口一次熔深可达20mm。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。