It has been proved by the field experiment that the method of rotary radial jet discharging gas accumulating in upper corner of coalface is really safety, dependable, economical and validly.
试验表明，旋转径向射流可安全、可靠、经济、有效的排放上隅角积聚瓦斯。
Jet combustion chamber gasoline engine possessed better economical and powerful Performance, as well as lower emission than that of Bath-Tub combustion chamber engine.
射流燃烧室汽油机具有优良的经济性、功力性和低排放指标。
Jet combustion chamber gasoline engine possessed better economical and powerful Performance, as well as lower emission than that of Bath-Tub combustion chamber engine.
射流燃烧室汽油机具有优良的经济性、功力性和低排放指标。
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