【纺织；造纸】走锭细纱机(纺纱机)【纺织；造纸】纺纱机

as stubborn as a mule

house shoe【服装】;mule【服装】;sandal【服装】

mule

mechanical mule【军】 车辆

spindle drive mule (spinning machine)

mule

spinning mule

feeder rolls mule (spinning machine)