推力

The thrust coefficient of different hydrofoil impellers was experimentally studied and simulated with CFD.

对几种不同型式轴流桨的推力系数进行了实验及CFD模拟研究。

The practical applications of this control system to the hypergolic bipropellant attitude control rocket engines at 30kg and 100kg thrust levels respectively are stated.

说明了该控制系统在30公斤级与100公斤级的双组元燃料变推力姿控火箭发动机中的具体应用情况。

Where initial thrust value (F 0 ) and final thrust value are zero.

最初推力的价值（六0 ）和最后用力的价值是零。

Formulations of the lift and the thrust are derived based on the three-dimensional unsteady vortex lattice method, and the effect on instantaneous shape velocity is analyzed.

推导了新的基于空间非定常涡格法的扑翼飞行器升力和推力的计算公式，然后分析了瞬时形状速度对它们的影响。

In order to solve this problem, the dynamic digital compensation of measuring instantaneous thrust is present.

为了解决这一问题，本文提出了瞬态推力的动态数字滤波补偿法，对其进行了系统的研究。

No early thrust into intellectualism is found in Waldorf but a keeping alive and nourishing of the child's healthy imagination and creative thinking powers.

没有早期推力到智识是在华尔道夫但维持生命和滋养儿童的健康的想象力和创造性思维的权力。

Presents the design of longitudinal control for ASTOVL lift-fan aircraft, a multi-variable, strong-coupling, complicated nonlinear system to make the system nonlinear offset and decouple, and the method used for linear system in designing the system to gain expectant flying qualities and the combination of aerodynamic control surfaces with thrust vectors to delay the control surfaces getting into saturation, and the minimum N-norm generalized inverse theorem of weighted generalized inverse adopted to apportion the moments commands, which make the control surfaces gain appropriate deflection and the simulation results to verify the dynamic inverse control laws designed really make the system nonlinear offset and decouple; when one command is given, only this output will response, and others do not response; when all commands are given together, the responses will be just the linear superpose of the response of each command, therefore the operation of the pilot will be simplified greatly.

摘 要： ASTOVL升力风扇飞机是多变量、强耦合、复杂的非线性系统，采用非线性动态逆理论设计控制律以实现系统的非线性对消及解耦，然后，采用线性系统的设计方法对系统进行设计，以使系统获得期望的飞行品质。同时，考虑到ASTOVL升力风扇飞机是由气动舵面和推力矢量融合作用的，为了延缓各舵面进入饱和的时间，采用加权广义逆中的极小N-范数广义逆定理分配力矩指令，从而使各舵面达到适当的偏转角。并将所设计的控制律进行了仿真，结果验证了所设计的动态逆控制律使系统实现了非线性对消和解耦，单个指令作用时，只有该项响应，其余不受影响；所有指令作用时，其结果就等于单个指令作用时的线性叠加，这样使驾驶员的操纵大大简化而易于控制，从而大大降低了飞行事故率。

Due to high thrust the Piston Jet Engine can be used where turbo-jets aren't practical.

由于大推力活塞式喷气发动机可以用在涡轮喷气机是不实际的。

Shanghai Kran Auto Bearing Co., Ltd is a Chinese professional company specializing in production of auto bearings, needle roller bearings, deep groove ball bearings, tapered roller bearings, thrust ball bearings and EMQ Bearings of "OVO""Kran"branch.

上海卡锐汽车轴承有限公司是一家专业生产高品质"OVO""Kran"品牌系列的汽车轴承、滚针轴承、深沟球轴承、圆锥滚子轴承、平面推力球轴承及 EMQ 电机轴承企业。

Kran Auto Bearing Co., Ltd is a Chinese professional company specializing in production of auto bearings, needle roller bearings, deep groove ball bearings, tapered roller bearings, thrust ball bearings and EMQ Bearings of "OVO""Kran"branch.

卡锐汽车轴承有限公司是一家专业生产高品质"OVO""Kran"品牌系列汽车轴承、深沟球轴承、滚针轴承、推力球轴承、圆锥滚子轴承的企业。

If you are committed to an education career, then the Master of Arts in Education from Ashford University is for you.

如果你是致力于教育事业，那么，艺术教育硕士学位阿什福德大学是给你的。

objective:to explore the expression of survivin protein and its mrna in rectal cancer and their clinic significance.

目的：研究凋亡抑制因子survivin蛋白及其mrna在直肠癌组织中的表达及其与临床病理关系。