welding strain meaning in English

焊接应变
熔接应变

Fourth , the paper treats two kinds of hoisting projects of high alititude construction in bulk and member assembly , hositing machine and plan layout , setting up scaffold and joints , and installing trunks , branches and joints etc . then in detail discusses the method which applys total station to measure three - dimensional coordinate of dendriform structure , including selecting survey sign points , creating survey system and converting survey coordinate system etc . the paper also deep research on the welding performance , welding method , welding process , welding stress and control , welding strain and rectification , weld defects analysis and weld quality inspection , and so on complicated heterogeneity steel weld proplems
接着系统的论述了高空散装法和分单元安装法两种树状结构吊装方案，树状结构吊装机械及平面布置，树状结构胎架及节点的搭设，以及树状结构树干、树枝和节点的吊装工艺等诸多工艺问题。详细的论述了采用全站仪对树状结构进行空间三维坐标测量的方法，包括测量标志点的选取、测量系统的建立及测量坐标的转换等问题。深入地研究了树状结构可焊性、焊接方法、焊接工艺、焊接应力及控制、焊接变形及矫正、焊接缺陷分析及焊接质量检查等复杂的异种钢焊接问题。