查询词典 jet engine

In this thesis an analysis is made for differences in jet structure, wavenumber, frequency and growth rate of disturbance surface wave of a liquid jet under conditions when temporal and spatial modes are respectively applied.

利用对色散方程的求解结果，本文详细地比较了液体射流研究中的时间模式和空间模式在各个方面的关系和差异，以及这种差异的影响因素。

In operation, the downhole devices will be laid down with tubings which will move up and down using the operation machine. Since the injection head can rotate in the determined speed, the rotating flow, compared with the conventional stable axial flow, can prevent the sands from depositing in the horizontal annular and washing the screen. The jet from high-efficiency jet nozzle will wash the screen directly with concentrated hydro-power. The working fluid can be clean water, without damage to the formation.

作业时用油管下入该井下装置，利用作业机带动油管上下移动，由于喷头可按照既定速度旋转，返回流体在水平段由常规的平稳轴向流动变为旋转流动，既可实现对防砂管的全方位解堵，又能避免砂粒沉积；高效喷嘴产生的射流直接对着防砂管冲击，能量集中；工作介质为清水，不会对地层带来二次污染。

In operation, the downhole devices will be laid down with tubings which will move up and down using the operation machine. Since the injection head can rotate in the determined speed, the rotating flow, compared with the conventional stable axial flow, can prevent the sands from depositing in the horizontal annular and washing the screen. The jet form high-efficiency jet nozzle will wash the screen directly with concentrated hydro-power. The working fluid can be clean water, without damage to the formation.

作业时用油管下入该井下装置，利用作业机带动油管上下移动，由于喷头可按照既定速度旋转，返回流体在水平段由常规的平稳轴向流动变为旋转流动，既可实现对防砂管的全方位解堵，又能避免砂粒沉积；高效喷嘴产生的射流直接对着防砂管冲击，能量集中；工作介质为清水，不会对地层带来二次污染。

"The successful delivery of the main structure of the sample jet nose is a key fruit in the development of the C919 jet and signals a successful cooperation between the maker and suppliers," Jin Zhuanglong, general manager of Commercial Aircraft, said at a delivery ceremony.

&该样本喷气机的头部主体结构的成功交付是 C919喷气飞机发展中的关键成果，标志着制造商和供应商的成功合作，&商用飞机有限公司的总经理金壮龙在交付仪式上说。

Neck jet pillows and shiatsu back jet system are some of the most sought-after features.

颈部喷射枕头及脚底回喷射系统的一些最抢手后特点。

Neck Pillows Neck jet pillows and shiatsu back jet system are some of the most sought-after features.

枕头颈部颈部喷射枕头及脚底回喷射系统的一些最抢手后特点。

Neck jet pillows and shiatsu back jet system are some of the most sought-after features.

脖子枕头和喷气射流系统shiatsu回一些当红之后特点。

Unsteady numerical simulation and analysis of the flow fluctuation in the Roots blower;2. The characteristics of gas solid jet are researched and the characteristics of gas\|solid jet fluctuation are proved by means of Rescaled Range Analysis.

流化床内颗粒的混合对流化床内颗粒运行以及燃烧有重要的影响，因此，利用图像处理技术在二维流化床试验装置上研究了水煤膏的混合过程，分析了气固两相射流的流动特性，利用R/S分析方法表明了气固两相射流的脉动特性。

It\'s also the first time to design and study the structure of new typed fluidized bed jet mill. Adding fresh air to the top and the bottom in the fluidized bed jet mill to increase the speed of upward currents, the way is leading fluidized particles to be boiling and reduce the eddy strength. The aim is to reduce the opportunity of regrinding. It is valuable to produce the particles which are rough, high density and high product rate requirement. At present, the technology has been prevailed, which produced lots of benefits for society and economy.

首次设计和研究了新型流化床气流粉碎结构，在下部和上部加入气流，提高了气流粉碎区的上升气流速度，补充喷嘴引射的气流，使底部的颗粒易于被流化沸腾起来，减少涡流强度，从而减少合格颗粒再粉碎的机率，这对较粗、密度高和成品率要求高的颗粒的加工具有极大的价值，并得到广泛的推广与应用，取得了较大的经济和社会效益。

Its also the first time to design and study the structure of new typed fluidized bed jet mill. Adding fresh air to the top and the bottom in the fluidized bed jet mill to increase the speed of upward currents, the way is leading fluidized particles to be boiling and reduce the eddy strength. The aim is to reduce the opportunity of regrinding. It is valuable to produce the particles which are rough, high density and high product rate requirement. At present, the technology has been prevailed, which produced lots of benefits for society and economy.

首次设计和研究了新型流化床气流粉碎结构，在下部和上部加入气流，提高了气流粉碎区的上升气流速度，补充喷嘴引射的气流，使底部的颗粒易于被流化沸腾起来，减少涡流强度，从而减少合格颗粒再粉碎的机率，这对较粗、密度高和成品率要求高的颗粒的加工具有极大的价值，并得到广泛的推广与应用，取得了较大的经济和社会效益。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。