Sniffing is regulated by the soft palate, a flap of tissue in the back of the throat that directs the flow of air through the mouth and nose.
闻嗅由软腭控制，那是位于喉咙后面的组织，通过不停来回拍动来导向经过嘴和鼻子的气流。
Even in aerobic activity the thermo-formed and ergonomically adjusted contact surfaces enable the free flow of air on the back.
即使在有氧运动的热形成和变化，符合人体工程学的接触面，使空气在背面自由流通。
In this paper, we present a new type of hybrid arc quenching system, which controls the metal vapor and back flow of the hot air in splitters arc quenching chamber.
本文研究了一种将窄缝与栅片配合应用于限流断路器的新型混合式灭弧系统。控制了栅片间金属短弧的金属蒸气喷流，同时削弱灭弧室中热气体的回流。
The back of the grid material with high permeability, three-dimensional two-channel design, air flow, moisture and heat away.
背部采用高透气性网格材料，三维立体双通道设计，空气导流，带走湿气和闷热。
Of large air-conditioning system, using the manual control valve regulating the complex process of manually adjusting the front-end valves, back-flow will be affected.
对大型空调系统而言，采用手动调节阀调节过程复杂，手动调节前端阀门，后端流量会受影响。
The flow over a backward facing step of an annular tube is a very important part of air drilling, determining the detritus going back to the ground successfully.
环空管道后台阶突扩流动是空气正循环钻井过程中十分重要的关键部分，直接决定了钻探岩屑是否能够顺利上返地面。
The flow over a backward facing step of an annular tube is a very important part of air drilling, determining the detritus going back to the ground successfully.
环空管道后台阶突扩流动是空气正循环钻井过程中十分重要的关键部分，直接决定了钻探岩屑是否能够顺利上返地面。
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