They also placed a small ring inside the water tank that whirled more rapidly than the cylinder and created a miniature lab version of the jet stream.

他们在水箱内放置了一个比汽缸速度快的环，制造微型的激流。

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The tapered windscreen flow field of the fan is composed of the outer ring turbulent jet and the inner sink, which tightly closes gas and dust to ensure the safety production.

风扇环形外腔产生的正压湍流射流在内腔负压汇流作用下形成锥形风幕流场，将处于流场范围内的气体及粉尘严密封闭起来，使安全生产得到保障。

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The process of jet mixing in the reactor was studied with tracer technique and the effects of the opening structure on the wall of the feed ring and the momentum ratio to the jet mixing were analyzed.

文中采用示踪法研究了四氯化钛氧化反应器内径向射流混合特征，探讨了射流环开孔结构和动量比等因素对射流混合效果的影响。

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