FL-7 is a continuous transonic wind tunnel, which is powered by three engines. Mach number is adjusted by the rotating speed of engines, the flexible wall nozzle and the by-pass valve.
7风洞是以三台航空发动机为动力的跨音速风洞，通过调节发动机转速、柔壁及旁路活门开度来实现对M数的控制。
FL-7 is a continuous transonic wind tunnel, which is powered by three engines. Mach number is adjusted by the rotating speed of engines, the flexible wall nozzle and the by-pass valve.
FL - 7风洞是以三台航空发动机为动力的跨音速风洞，通过调节发动机转速、柔壁及旁路活门开度来实现对M数的控制。
Thrust vector control is often achieved by throttling individual thrusters or by injecting gas through the nozzle wall to cause a change in the local pressure distribution.
推力矢量控制，往往所取得的节流个别推力器或注入气体通过喷嘴壁造成的变化在当地的压力分布。
Under the same wall heat condition, with the increase of momentum correction coefficient, viscosity loss of the nozzle increases, but thrust and specific impulse decrease.
在同等壁面热条件下，随着动量调节系数的增加，喷管粘性损失增大，喷管的推力和比冲都将下降；
At different time, particles with different sizes can hit different locations on the wall, which are mainly at the connective part of shell and nozzle and out the convergent section of nozzle.
在不同的时间下，不同尺寸的颗粒会撞击壁面不同的位置，但主要集中在壳体与喷管的相接部分和喷管的收敛段。
The numerical simulation also indicated that secondary cold gas injection had very obvious effects on the surface wall about the exit of the nozzle diffuse.
二次冷喷流对喷管扩散段出口附近壁面有非常明显的冷却作用。
The turbulence induced by the defects of nozzle, such as the burr at the inlet and outlet, and the roughness of the wall, is the main cause to decrease the length of intact jet.
当射流速度比较大时，喷管的缺陷如进口出口的毛刺和流道壁的粗糙度是诱发湍流使射流破断的主要原因。
This paper puts emphasis on the introduction of application and disseminations for the new model of cyclone, high efficiency feed nozzle and cold-wall sliding Valve.
本文重点对新型旋风分离器、新型高效进料喷嘴及电液冷壁滑阀的推广应用作了介绍。
By allowing the influence of ambient pressure to be transmitted to the nozzle wall, the aerospike yields a net thrust advantage over conventional bell-type nozzles.
允许的影响，环境压力，以传送给喷嘴墙，气动收益率，净推力的优势，与传统的罩式喷嘴。
The main reason that the submerged nozzle clogged during continuous casting of high aluminum low carbon steel is aluminate that aggraded the submerged nozzle wall.
中薄板坯连铸机生产低碳高铝钢过程中，浸入式水口堵塞的主要原因是水口与钢水之间产生化学作用和钢水中的氧化铝夹杂物在水口壁上沉积。
Induced by the high-speed feed jet flow, the solid particles above the feed nozzle tended to flow down, and a reverse flow zone was formed along the riser wall.
受喷嘴区高速射流的影响，喷嘴上方固体颗粒呈向下流动趋势，形成一个诱导回流区域。
Results showed that the net heat loss on the downstream side of the jet nozzle could reach 20 ~ 30% of total heat flux. Therefore it can not be neglected in calculating the wall temperature.
结果表明，喷管下游端的壁面辐射损失高达壁面总热流的20 ~ 30%，在壁温计算时不容忽略。
Meanwhile the pneumatic nozzle installed under left wall spray binder or coating liquid into turbojet material, in this way granule or successive even film can be obtained.
的气动喷嘴将粘合剂或包衣液喷入呈旋涡状的物料层，从而将粉体制成颗粒或获得连续均匀的衣膜。
Meanwhile the pneumatic nozzle installed under left wall spray binder or coating liquid into turbojet material, in this way granule or successive even film can be obtained.
的气动喷嘴将粘合剂或包衣液喷入呈旋涡状的物料层，从而将粉体制成颗粒或获得连续均匀的衣膜。
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