Employed semi-rotary large shuttle and hook to increase sewing efficiency.
采用半回转式大月眉与大梭心，提高车缝效率。
2
The remaining superheater banks and the economizer shall have semi-retractable or fixed rotary blowers.
剩余的过热器管束和省煤器应有半伸缩式或固定旋转式吹灰器。
3
A principle of the magnetic circle designing of rotary magnetic method used in making semisolid slurry with non dendritic structure is analysed by the semi lumped factor method.