短語(yǔ)詞組短語(yǔ)horizontal overhead position welding 仰角焊horizontal ertical position 平角焊位置horizontal ertical position welding 平角焊horizontal thrust position 水平推力位置horizontal prone position 水平俯臥位horizontal vertical position 平角焊位置horizontal oerhead position 仰角焊位置horizontal recumbent position 去枕仰臥位horizontal overhead position 仰角焊位置 返回 horizontal position