短語詞組短語horizontal overhead position welding 仰角銲horizontal ertical position 平角銲位置horizontal ertical position welding 平角銲horizontal thrust position 水平推力位置horizontal prone position 水平頫臥位horizontal vertical position 平角銲位置horizontal oerhead position 仰角銲位置horizontal recumbent position 去枕仰臥位horizontal overhead position 仰角銲位置 返回 horizontal position