printing press operators supervisor 印刷机运营主管

sewing machine operators supervisor 缝纫机运营主管

photocopy machine operators supervisor 复印机操作员主管

switchboard operators supervisor 总机接线员主管

subway operators supervisor 地铁运营主管

telephone operators supervisor 电话接线员主管

streetcar operators supervisor 有轨电车运营主管

filmsetter operators supervisor 胶片设置运营主管

photocomposer operators supervisor 照相排字机运营主管