查询词典 dropping angle

During the lateral parabolic profile was computed,numerical methods of calculating angle of inclination on initial point of the lateral paracurve and calculating angle of inclination based on interval length were analyzed.It is pointed out that the key of the lateral parabolic profile design is a circular function equation which can be applied to solving the angle of inclination on initial point of the lateral paracurve.

对侧位抛物线剖面设计求解过程中的求侧位抛物线初始点井斜角的数值方法和从段长求井斜角的数值方法进行了分析，指出其关键是求解侧位抛物线初始点井斜角所满足的一个三角函数方程。

Based on the definition of benchmark angle and compensation angle,the algorithm of roll angle of projectile in fire plane is brought out and the calculating error is analyzed.The simulation is carried out for the swing of projectile and the measurement of geomagnetic signal error.

将弹丸的滚转角分解为基准角和补偿角，给出了处于射击平面内的弹丸滚转角解算方法并进行了误差分析，针对弹丸的摆动及地磁信号测量误差进行了仿真。

Then, aerodynamic parameters in different flight conditions are used to imitate the uncertainty of the system, and the digital simulation of closed-loop system designed is performed. The results show that the system can accomplish asymptotic decoupling of roll angle, sideslip angle and head-on angle for aircraft, and the system is provided with the function for restraining uncertainty in the system. This illustrates that the flight control system designed has not only good decoupling characteristic, but also better robustness.

然后用不同飞行条件下的空气动力参数变化来模拟系统的不确定性，并进行闭环系统数字仿真，结果表明，所设计的控制律不仅可实现对飞机滚转角、侧滑角、迎角等的渐近解耦控制，而且对系统不确定性具有较强的抑制作用，说明系统具有较好的解耦性和较强的鲁棒性。

The system can automatically seek north when the vehicle is immobile. And the time consumption is no more than 5.5 min. Besides, the system can keep azimuth angle and provide tilt angle and pitch angle of the vehicle.

本系统可以在车载条件下，停车完成自动寻北，寻北时间小于 5.5min；本系统还具有在机动时进行方位保持、实时提供载体倾斜角和俯仰角等功能。

Firstly, the control of reentry phase and the model of RCS jets are presented. Then the flight control system is divided into two subsystems based on the time-scale separation principle. The fast states subsystem corresponds to the three body-axis angular rates, the slow states subsystem controls the angle-of-attack, sideslip angle and the rate of the bank angle about the velocity vector. Lastly, the proportional-plus-integral feedback is designed to increase the system robustness.

首先，分析了SRLV再入段的数学模型，并给出了反作用推力控制系统的控制模型；其次，将非线性动态逆方法与时标分离原则相结合，考虑飞行器姿态控制系统的外环角回路的慢变特性和内环角速度回路的快变特性，独立设计了两个回路的控制律；最后，为了增强系统的鲁棒性，分别在两个回路中引入了比例－积分反馈，有效地抑制了干扰力、力矩和非线性对消带来的逆误差。

An attacking mode of deflected bomb dropping was proposed based on its properties, i.e., there is an angle between the projection of the velocity and the projection of line-of-sight in the horizontal plane.

激光制导炸弹是一种无动力可控武器，根据这种特性，提出了偏转投弹的作战方式，即投弹时炸弹的速度在水平面的投影与弹目线在水平面内的投影存在一个夹角。

Wang had simply been dropping his arm angle, the theory goes, because his arm speed was too slow.

理论上说他的挥臂太慢，造成他的伸卡下沉球变成水平跑动而不是垂直往下掉。

Wang had simply been dropping his arm angle, the theory goes, because his arm speed was too slow.

小民单纯只不过是因为出手时手臂的角度跑掉了，理论上来说，因为他的手臂速度过慢，导致伸卡球变成是横越过好球带，而不是锐利地往下掉。

Wang had simply been dropping his arm angle, the theory goes, because his arm speed was too slow. That caused his sinker to sweep across the strike zone, not sharply downward.

小民单纯只不过是因为出手时手臂的角度跑掉了，理论上来说，因为他的手臂速度过慢，导致伸卡球变成是横越过好球带，而不是锐利地往下掉。

Aiming at the problem that the seeds picked up by the suction plate of the seed metering device cannot accurately fall into the seed pit opener as well as into the seed pit, an innovated seed metering device on which the seed dropping angle can be adjusted within a certain range and a new testing stand have been developed in accordance with the mathematical calculation model that had 'in accordance with the mathematical calculation model that had been established previously.

本论文根据2BQM-2型气吸式精量铺膜播种机的结构和工作原理，针对该机在实际播种中，吸种盘吸出的种子不能满足准确地落入在膜上滚动开穴的鸭嘴内，并及时地排入到鸭嘴所成的穴孔内的设计要求，进行了一定的试验研究，利用已建立的计算数学模型，设计新的试验台，改进排种器，使排种器的落种角度可以在一定的范围内调整。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。