涡

Liquid-fuelled rocket engines can be classified as either open- or closed-cycle, according to how they derive the gases that power the turbine-driven pumps used to force the fuel and oxidant into the combustion chamber.

液体燃料火箭引擎分为开或闭循环，是跟据它们如何获得涡喷驱动泵的气体迫使燃料和氧气进入燃烧室。

With this powerful tool, the roll cell shape, cell wear, and the conditions of deposit can be easily examined.

有这种强大的工具，卷筒涡胞形状，胞腔磨损和沉淀状况很容易检查。

The tip speed limit is for controlling the tip vortex cavitation energy, which is a function of tip speed to the sixth power.

尖端的车速限制是为了控制尖端涡穴蚀的能源，这是一个功能提示的速度向第六权力。

Also, water entering the blades is likely to destroy the thrust bearing in the turbine shaft.

水分进入叶片也很可能会损坏涡轮轴的推力轴承。

The particle used in the test was glass beard of mean diameter 30～40mm.

研究发现分离器方腔内的流场偏离其几何中心，并呈中间为强旋流动和边壁附近为弱旋的准自由涡区的特点，且在边角处存在局部小旋涡。

In particular, is difficult to control the hydraulic vibration, often because of the low-frequency eddy tail pipes with a substantial unit of output swing so that the unit sent to the AC grid.

尤其难以控制的是水力振动，往往是由于尾水管的低频涡带产生机组大幅度的出力摆动，使机组发出的交流电难以并网。

The development of drill string mechanics is discussed from the perspectives of the introduction of the topic, the research objective, the methods employed for the research, the motion behavior of the drill string, the fundamental equation for of drill string dynamics, the tension and torque of the drill string, the elastic stability of the drill string, the stress analysis of the bottom hole assembly, the drill string vibration and swirling.

从钻柱力学问题的提出、研究目标、研究方法、钻柱的运动状态、钻柱动力学基本方程、钻柱的拉力扭矩、钻柱的弹性稳定性、底部钻具组合受力、钻柱振动与涡动等方面分析了钻柱力学的发展状况。

This paper conducts the computation classification for the spring flood and drought situation in He Zhou by using the spring precipitation data in four weather stations of He Zhou during 1965-2004,and the z index,and the index of regional flood and drought .

利用贺州市四站1965~2004年春季降水资料，运用z指数和区域旱涝指数对贺州地区春季旱涝情况进行计算分类，并对重旱涝典型年份500hPa环流特征量和4月平均环流场展开分析，发现：贺州地区春季极易发生局部旱涝灾情，90年代以来重旱涝年份出现频率明显增大；在重旱年副高强度强，西伸脊点明显偏西，南支槽偏西偏弱，极涡中心偏东，亚洲中高纬高度偏低，在重涝年则相反。

The effect of slenderness ratio, diffuser, pressure ratio and cold mass fraction on separation performance was analyzed and the result tallied with the simulation, which proved that this paper can provide theoretical and experimental basis for industry.

分析了基本结构参数长径比、阻涡器与操作参数压比、冷流率对分离性能的影响，实验数据与数值模拟分析结果吻合较好，为两相涡流管的工业应用提供了理论与实验依据。

It is mentioned that rotating force of oil film generated by shaft rotation is the key factor in rotor stability.

但是该模型主要用于偏心率很小的对中转子系统，各参数均为给定的常数，因此仍不适合描述大涡动下转子系统的运动状况。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。