易于操纵的

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。

Because of the use of novel technique of mode choosing and shape modifying to the high power infrared diode laser,and of manipulating the trap with dual-lens scanning, the tweezer is easy to be constructed and operated.

由于采用了独特的对大功率多模红外激光选模整形和双透镜陷阱操纵技术等性能价格最优化选择，该系统易于构建，陷阱操作方便，其构建价格仅一般光镊的几十分之一，非常适合光镊技术的推广和一般实验室构建。

Early use of enteral nutrition after the operation of oral critical patients can improve the nutritional status and recovery of bowel movement more than parenteral nutrition.2. Early use of enteral nutrition for the postoperative patients can reduce the rate of the complication,such as high glucose, postoperative infection and enterogenous infection.3. The treatment cost and the risk of the enteral nutrition group are both lower than the cost of the parenteral nutrition.

1、对于口腔恶性肿瘤根治术后的危重病例，EN能够促进患者术后体质量、营养状况的恢复，达到PN同样的效果，甚至更优。2、对于口腔恶性肿瘤根治术后的病人，术后行EN可以减少高血糖、术后感染、肠源性感染等并发症。3、EN的用度低廉，操纵简单，风险很低，易于被患者和护理工作职员接受。

The results indicate corporation size have considerable impact on earnings value relevance. But the results that earnings' value relevance increases as corporate size increasing are rightabout from foreign research results.

笔者认为造成这一现象的原因在于小规模公司容易受庄家操纵以及具备较大送配空间等特点使得小规模公司更易于脱离其本身的内在价值，造成&会计盈余—内在价值—股票价格&链条的脱节。

The photomultiplier converts the light energy signal into an identical electrical signal that can be easily manipulated and measured.

光电倍增管可将光能转变成易于操纵或测量的电流信号。

He said it was an indirect tax on individuals that would be as open to manipulation as the European model.

他说，这是一种对个人征收的间接税，将和欧洲模式一样易于受到操纵。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失