双 Ⅰ形容词1.(两个) two; twin; both; dual 双发动机飞机 twin-engined plane; 双向交通 two-way traffic; 成对成双 in pairs2.(偶数的) even 双号座位 even-numbered seats; 双数 even numbers3.(加倍的) double; twofold 双份 double the amount; twice as muchⅡ量词(用于成对的东西) pair 一双筷子 a pair of chopsticks; 一双鞋 a pair of shoesⅢ名词(姓氏) a surname 双福 shuang fu
The weaker appeared tens minutes later than the stronger and disappeared a few minutes later . the distributions and sequence of the two loops are tallied with the double x - ray sources 双环结构的强弱分布和出现时间顺序与双x射线源的情形符合得很好。
At last , a test for the 2 - x actuator has been performed , in which the static and dynamic output of the actuator has been tested to examine the design 对推挽式双x驱动器进行了原理性试验研究,测试推挽式双x驱动器的静态和动态输出,检验设计方案的合理性。
After that , the static and dynamic properties of the actuator has been studied , the dynamic equation has been modeled . through the analysis , we can see the 2 - x actuator can provide the bidirectional force and displacement 对于推挽式双x驱动器,初步分析了其静态和动态力学性能,建立相应的动力学方程,从理论上求证了推挽式双x驱动器能够提供双向的作用力和位移输出。
In addition , the dynamic equation of the rotor with trailing edges and the 2 - x actuator has been modeled for analyzing the aerodynamic performance of the rotor . the result of the analysis tells us that the performance of the rotor with trailing edges can get a remarkable improvement 进而研究旋翼动力学模型,将推挽式双x驱动器模型作为后缘附翼的一种驱动机构,分析旋翼的气动性能,仿真运算结果表明,后缘附翼智能桨叶在各方面的性能都有显著的提高。
The procedure of the test is as follows : first , the piezoelectric stack has been examined to test the performance parameters of the piezoelectric material ; second , the 2 - x actuator has been functioned with different static voltage to test its capability ; last , function the 2 - x actuator with voltage with different frequencies to test its dynamic properties . all the output of the actuator has been measured by the laser vibration measurement 首先对压电堆进行试验,验证压电材料的性能参数;再对推挽式双x驱动器施加不同的静电压驱动它,验证作动器的驱动能力,最后对推挽式双x驱动器输入不同频率的电压驱动,测量该驱动机构的动态特性,试验均采用激光测试仪测量推挽式双x驱动器的输出特性。
Similarly to other methods for smart rotor , the most important and difficult problem is the design of the actuator . first , the piezoelectric smart material has been studied and an actuator with piezoelectric stack has been proposed in the mode of parallel connection in electrics and series - wound in mechanics according to the property of the piezoelectric porcelain . second , a 2 - x actuator has been designed with the piezoelectric stack active part according to the triangle theory 本文首先对压电智能材料进行研究,根据压电陶瓷的特点,采用电学并联、力学串联的设计模式,提出一种压电堆主动驱动部件,在此基础上,根据三角形放大原理,设计了推挽式双x放大机构,并将压电堆主动件应用于推挽式双x机构,形成了推挽式双x驱动器。