回

The solver is used to investigate laminar and turbulent separated flows around a 6:1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces. The second separation flows are successfully identified in both laminar and turbulent flow simulations. The computations are shown to agree well with available experimental and numerical data and the physics of 3D large-scale flow separations and vortex shedding are confirmed.

应用所开发的求解器，以6：1长椭球体为算例计算了回转体在大攻角下定常斜航运动时的三维粘性流场及水动力，对层流流动和湍流流动分别进行了计算，分析了层流与湍流分离流动和涡旋产生的特点及其对水动力的影响；计算结果与他人的试验和计算数据比较，吻合程度良好，表明应用本求解器能够正确模拟这种以层流/湍流分离流为主的复杂粘性流动，得到相当精确的水动力，检验和验证了该求解器精确模拟回转体在大攻角下的粘性分离流动和计算水动力的能力。

If I had happened to have known a young princess in exile, and while she was still a pretender to the throne, and had met her again in her full queenly estate after she had come into her rights, our meeting would have had the same character.

如果我曾经偶然认识了一位被放逐的公主，而那时她还未夺回王~位，现在在她夺回宝~座后见到皇~后般仪态的她，我们的会见就如此一般。

The result was that the defending radar operator saw a large cloud of echoes on his radarscope, completely obscuring echoes from the attacking planes.

结果防御方的雷达操作员在显示器上只能看到大片的回波云，完全将攻击飞机的回波淹没。

Typhoon Nanmadol made landfall on Taiwan on December. The outer rainband of typhoon combining with northeasterly monsoon induced strong reflectivity. When Typhoon Nanmadol left Taiwan, reflectivity dissipated rapidly because of incursion of drier and colder air.

月份侵台之南玛台风，外围雨带因与东季风共伴而产生强回波，出海后因为东季风较乾的空气侵入，使得台风回波迅速消散。

First, in order to verify the correct of this retrieval month, by using the data of three-dimensional wind field, raininess field and temperature field that are output by MM5 numerical simulation, we climate the radial velocity field and echo intention field in the in-phase observation area of Dual-Doppler radar, then, on the base of the upwards retrieval theory and using the radial velocity field and echo intention field in the in-phase observation area of Dual-Doppler radar, we retrieve the atmospheric three-dimensional wind field.

首先，为检验此种反演方法的可靠性，我们使用MM5数值模式输出的三维风场、雨强场、温度场等数据，分别模拟生成两部雷达同步观测区的径向速度场和回波强度场，然后根据以上的反演理论利用模拟的双多普勒天气雷达观测到的径向速度场和回波强度场反演出大气三维风场。

The water balance of landfill leachate is one of important problems in practical engineering of leachate recirculation treatment.

渗滤液回灌的水量平衡是垃圾填埋场渗滤液回灌处理法工程应用的关键问题之一。

You will need some type of oil recovery system to ensure oil return.

你必须采用某种形式的回油系统确保回油。

Heat transfer performance of a plate-fin recuperator was studied experimentally and numerically in this paper.

对板翅式回热器的传热性能进行了实验和数值模拟，对板翅式回热器的传热性能以及其温度场和速度场的情况进行了分析，为今后的此种换热器的设计与改进提供了一定的理论依据。

Recuperator, as the key part in recuperated cycle, plays the important role in efficiency increasing of gas turbine.

作为回热循环中的关键部件，回热器性能的好坏对于燃气轮机效率的提高至关重要。

It must be a kind of recuperator which has small volume, light weight, high recuperated effectiveness and high reliability for using on micro gas turbine.

微型燃机的特点决定了这种回热器必须具有体积小、重量轻、回热度高、可靠性好以及易于生产制造等特点。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。