焊点

To solve the problem, a three-point bending test was put forward.

中文摘要：针对以Q450NQR1钢为基板、B级钢为腹板模拟实际工装位置，疲劳断裂与货车运营实际工况不符的问题，提出以B级钢为基板、Q450NQR1钢为腹板进行三点弯曲疲劳试验，诱使疲劳裂纹向B级钢侧扩展，研究了MAG气体保护焊B级钢/Q450NQR1钢搭接接头的疲劳性能。

Key words : butt resistance welding ; duplex stainless steel ; pitting corrosion

电阻对焊；双相不锈钢；点蚀

Further considering the characteristic of microcosmic mechanics around the press area, the reason of 'gnawing solder' causing the jam is studied based on the model of Kulun friction.

从库仑摩擦模型入手，考虑粘结点的微观力学特性，进一步研究了可能引起机构卡死的&咬焊&原因。

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。