焊接操作—welding operation 焊接技术—welding technique焊接工艺—welding procedure 焊接过程—welding process手工焊—manual welding 自动焊—automatic welding 车间焊接—shop welding 现场焊接 site welding热输入—heat input 预热—preheat后热—postheat 焊后热处理—postweld heat treatment熔化系数—melting coefficent 熔敷系数—deposition coeffcient 熔敷效率—deposition efficiency 损失系数 —loss coeffcient坡口—groove 钝边—root face根部间隙—root gap 根部半径—root radius

平焊—flat position welding 横焊—horizontal position welding 立焊—vertical position welding 仰焊—overhead position welding平角焊—flat fillet welding 立角焊—fillet welding in the vertical对接焊—butt welding 角焊—fillet welding 单面焊—welding by one side 双面焊—welding by both sides