barker of rotary-ring type【林】
旋转式钴60治疗机
rotary cobalt-60 therapy unit
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rotary seal
rotary-piston pump oscillating-piston pump
rotary
rotary desk【油气】;rotary table【机】;rotating platform【机】
rotary-drilling machine mining, quarrying
speed gearing rotary-drilling machine with speed gearing for mining
multi-chamber rotary-drum furnace