【运输】使用有孔滚筒；圆盘,刀盘,磨盘

unweighted pair-group method using anarithmetic average

making magnesium-treated cast iron using master alloys

fluid circulation in refrigeration machines using osmosis

aircrafts using in flight the features of both aeroplane and

power plant using vaporous industrial gas as working fluid

clamping connection using toggle

pulse generator using multi-aperture magnetic cores

semipermeable, membrane separation using semipermeable membranes