查询词典 tri-angular thread

A nonlinear dimension chain has both length dimension variable and the angular dimension variable. So the nonlinear dimension chain can't be calculated by simple algebraic sum.

对于非线性尺寸链，既有长度尺寸变量，又有角度尺寸变量，不能运用简单的代数和求解。

If w is a ν-value algebroid function of finite positive order in the unit disk, then there is a point eiθ0, such that w has at most 8ν-6 Borel exceptional values in angular domain Δ(θ0,δ).

对于单位圆内有穷正级ν值代数体函数w，必存在点eiθ0，使w在角域Δ(θ0，δ)内的Borel例外值之个数至多为8ν-6。

As one of the most often used mountings, the altazimuth mounting satellite tracker has a blind area near the zenith because of the very high azimuth angular velocity, as a result, discontinuous observing data are caused. As for those fast flying satellites, this kind of blind area is very significant because it causes difficulties in precisely determining the satellites' orbits.

作为最常用的一种机架，采用地平式机架的人卫跟踪仪在观测天顶附近区域的目标时，由于方位转速过大而不能连续观测，存在一个固有的天顶盲区，特别是对飞行速度较快的近地卫星，这个盲区的影响是相当大的。

We analyzed and proved that this kind of mounting can cover all useful sky area and has much lower and smoother angular velocity and acceleration than the altazimuth one. IN THIS PAPER WE ALSO DISCUSSED THE RELATIONSHIP BETWEEN TWO MOST OFTEN USED ALT-ALT coordinate systems (SN-ALT-ALT, EW-ALT-ALT coordinate system) and the sidereal hour-angle coordinate system, the horizon coordinate system.

本文推导了ALT-ALT跟踪机架光电人卫跟踪仪原理，分析证明了它在要求的跟踪区域内不存在观测盲区，对同一目标的跟踪角速度和角加速度比地平式机架跟踪仪小且平滑，可实现全天覆盖。

A unit of ''.'angular'.'' measure equal to the angle subtended at the center of a circle by an arc equal in ''.

弧度平面角的一种衡量单位，其大小为''。

Driver system for the stability of nonlinear and non-use of the theory of linear quadratic control law studies, select the ball location, speed and rod angle, angular velocity of the four variables as state variables, output variables for the ball position and bar angle, the establishment of linear state space equation and after the designs of clubs based on LQR control law, the design process simple and easy to realize the control law, simulation results show that the linear quadratic regulator robustness and stability.

球杆系统翻译，求高人针对球杆系统的非线性和不稳定性运用最优二次型理论进行控制律的研究，选取小球位置、速度和横杆角度、角速度四个变量为状态变量，输出变量为小球的位置和横杆的角度，建立状态空间方程并进行线性化后设计了基于LQR的球杆系统控制律，设计过程简单，控制律的实现容易，仿真结果表明了最优二次型调节器的鲁棒性和稳定性。

The simulation results show that when light wave propagates along the angular bisector of corner angle in metamaterial volume,the electromagnetic focus effect will not exist in the metamaterial volume,although the permittivity and permeability of metamaterial are very small.

仿真结果表明：即便对于εr和μr都很小且无耗的正多边形异向介质柱，当平面光波沿正多边形顶角角平分线方向传播时，在异向介质柱内不会发生电磁聚焦。标签聚焦特性时域有限差分方法异向介质平面光波 Focus charaters FDTD Metamaterials Plane light wave

The effect of initial attack angle and pitching angular velocity on the selection of release angle is remarkable.

得到标枪的初始攻角和俯仰角速度对出手角度选择的影响较显著。

This requires the loads in the clamps and the angular acceleration to be known.

这需要夹紧器的力和角加速度已知。

The angular acceleration of a rotary shaft is one of the most important parameters for revolution mechanism, which is widely employed in practical applications.

转轴角加速度是旋转机构转动时的一项重要参数，旋转体的角加速度在实践中有着广泛和重要的应用。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。