The generated square pulses have flat top and no internal structure.
所产生的方波脉冲顶部平坦并且无内部结构。
Gears for mines: Ball type gear, taper type gear, flat top gear and plum type gear.
矿山用合金齿系列：球形齿、锥形齿、平顶齿、梅花齿等。
The maximum tip diameters of flat top Chainwheels among ISO, ANSI and GB are different.
关于平顶链链轮最大顶圆直径的规定，ISO、ANSI和GB等标准不尽相同。
Visible on the above image right are two flat top mesas in southern Mars, where the season is changing from Spring to Summer.
可以看到上面影像右侧是两座位于火星南部的平顶山，而那里的季节正从春天向夏天转变。
Bell and Howell perforation: a film perforation shaped with flat top and bottom and curved sides.
贝尔浩型片(齿)孔：上下平行两边弯曲的胶片齿孔。
A window function which has a flat top in frequency domain is designed to correct the amplitude error caused by Picket_Fence effect.
并从减小栅栏效应带来的幅值估计误差的角度，设计了一个具有平顶窗谱的窗函数，分析对比了它和矩形窗函数的性能差异。
For resonators with random disturbed phase mirror, its modes are partially coherent, and there also exists a suitable parameter to get flat top beam.
对随机微扰型位相片，输出模式是部分相干的，在合适参数下，也可得到平顶光束。
On seismic profile cross-cut the channel, it generally presents as a lenticle with flat top and concave bottom and has the character of infilling in reflection.
河道砂岩体在横切河道的地震剖面上一般表现为充填反射状的顶平底凹的单透镜体；
It is striking: the outline of the outline of the slope rises slowly to a long, flat top of the mountain, it is really a giant crater-a basin of volcanic summit.
它的轮廓非常鲜明：缓缓上升的斜坡引向一长长的、扁平的山顶，那是一个真正的巨型火山口——一个盆状的火山峰顶。
Stable plasma equilibrium and discharge waveforms with good repetitiveness and wide flat top are obtained, which are of particular advantage for physical experiments.
该装置总体联调是非常成功的，获得了重复性很好、环电流平顶宽的稳定平衡的放电波形，这对物理实验的开展非常有利。
With the simulation of cylindrical array, the patterns of flat top beam and cosec beam are gained. Example simulation are shown to illustrate the effectiveness of the algorithm.
通过圆柱形阵列的仿真计算得到满足设计要求的三维平顶波束和余割波束方向图，证明这种算法的有效性。
Theoretically, a column conformal array with small size and few elements to generate a shaped beam with low side lobe and main beam with fixed width and flat top is carried out.
理论上实现了用较少的天线单元，且与小直径圆柱面共形的阵列，激励产生副瓣电平较低、主瓣有一定的宽度且顶部较平坦的波束。
By using the generalized function in the linear array synthesis the direction diagram with approximate flat top in wide Angle region and with or without a single side lobe can be obtained.
将广义函数用于线天线阵综合，可得到广角近似平顶的方向图，亦可得到具有单一付瓣和无付瓣的方向图。
Low Volume, Low Pressure, Vapor, (Flat Top Plungers).
低体积，低压力，蒸汽，(平顶活塞)。
The results of flat-top wave beam and cosecant square wave beam, which are gained using this method, are fairly good, testifying this method is effective in beam shaping of conformal arrays.
运用此方法得到共形圆柱阵列的平顶波束和余割平方波束方向图，效果较好，证明此方法对于共形阵列是有效的。
The effect of the random growth error on the transmission performance of the double half-wave filter with flat-top response is studied, with the transmission matrix method.
采用传输矩阵的方法，研究了随机生长误差对双腔型平顶滤波器透射特性的影响。
The results indicate that flat-top beam shaping and single-circle beam shaping at the focal plane can all be realized by using three-zone annular phase pupil filters.
模拟结果表明，利用三环相位光瞳滤波器，不仅可以在焦面上实现光强的平顶分布，而且还可以得到单环衍射光束。
The results indicate that flat-top beam shaping and single-circle beam shaping at the focal plane can all be realized by using three-zone annular phase pupil filters.
模拟结果表明，利用三环相位光瞳滤波器，不仅可以在焦面上实现光强的平顶分布，而且还可以得到单环衍射光束。
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