downhand

(非标准术语“平焊”表示什麽意思？

What does the nonstandard term “downhand” mean ?

The concept of motion planning for welding positioner is discussed, and the mathematical model of rotating/tilting positioner under the downhand welding position is created.

对焊接变位运动规划任务进行了,立了旋转倾斜型焊接变位使待焊点处于最佳焊接位数学模型,并编制了求程序,对空间螺旋线型焊缝进行了模拟。