梯形

Through theoretical analysis and experiment simulation, transmission effect in trapezoid wire winding curve and the double cosine half-wave speed rule curve is researched. And the wire winding algorithm of single cosine half-wave is proposed.

通过理论分析和实验仿真的方法，深入研究梯形走线规律曲线和双余弦半波速度规律曲线的传动效果，提出单余弦半波走线算法。

In this dissertation, dynamic phasor method based on the critical damping adjustment is developed to eliminate the numerical oscillation caused by the changes of the network configuration.

分析了基于梯形法的动态相量仿真的数值振荡问题，结合现有的算法和动态相量法的特点，讨论了基于临界阻尼调整法的动态相量法。

Book this introduce design entirely electric to control and pursue, ladder-shaped picture, chronological chart, wiring diagram, flow chart and PLC procedure, should design and use bulb come and realize whole simulation course of experiment, in the course of designing, have done a lot of relevant experiments , for example: Only according to get up and park PLC of circuit design, crossway lipstick PLC of green light design.

本书介绍了整个设计的电气控制图，梯形图，时序图，接线图，流程图和 PLC 程序，该设计运用了灯泡来实现整个实验的模拟过程，在设计过程中，做了许多相关的实验，例如：单按起停电路的 PLC 设计，十字路口红绿灯的PLC设计。

Based on the practical process, this paper presented a method to compute the deceleration distance in real time.

基于插补的实际情况，给出一种实时计算减速距离的方法，在此基础上，实现了基于梯形速度曲线的速度平滑处理以及基于S形速度曲线的加速度平滑处理。

The sum of the elements of the principal diagonal of a matrix.

所有对角元素都相等的梯形矩阵。

Using the directional derivative formula, the governing equation is discreted in the physical domain in which a nonorthogonal grid system is used. Two kinds of AF2 schemes, i. e. AF2-plane relaxation and full implicit AF2, for the TSD equation are proposed. Numerical results show that the full implicit AF2 scheme converges faster than AF2plane relaxation scheme. For the rectangular wing and swept wing, the results of the present method are compared with FP results, and the agreement is good.

采用适合于梯形机翼和后掠机翼的斜网格，利用方向导数公式直接在物理空间对主管方程进行离散；将近似因式分解方法应用于绕机翼的跨音速小扰动势流问题，提出AF2—面松弛和AF2全隐式两种迭代格式，并对它们的收敛速度进行比较，结果表明后者明显快于前者；直机翼和后掠机翼的算例表明，本文方法的结果与精确势流方法的结果吻合良好。

The effect of each parameter on distribution of static pressure and pressure loss coefficient are found out.

为了解不同的雷诺数和出流比情况下各种因素对压力损失系数的影响，对有侧流梯形扰流柱通道端壁的静压和压力损失系数进行了实验测量。

Organ screens circular, trapezoidal, fan shape, and other special design, the general window for the top, dormer windows or access to better match the overall design style home.

风琴帘有圆形、梯形、扇形等特殊形状的设计，一般用于顶窗、天窗或斜窗，更好地配合家居的整体设计风格。

A black trapezium is at the top of the ribbon drape and service ribbon.

黑色梯形是在剪彩悬垂和服务丝带的顶部。

Stability of implants was measured by rfa regularly.results there was no significant difference between both groups about stability at all periods and histomorphometry, but isq, bic and ba of experimental group were higher than control group, and isq recovered more quickly in experimental group after loaded.conclusion dual threads design contributes to assure the initial and secondary stability of implants, which is particularly important in poor density bone.

结果 两组种植体在各时期的稳定度差异均无显著性，但在每一时期实验组种植体的稳定度均较对照组高，实验组种植体在负重后稳定度恢复较快，负重3个月后实验组的骨-种植体接触率和种植体周围骨面积均较对照组稍高，但两者差异无显著性。结论双梯形螺纹种植体有利于保证种植体的初期和后期稳定性，应用于低密度骨质优越性会更加明显。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。