查询词典 circular cylinder

A right circular cylinder target demonstrates its validity, where the large-bistatic and small-bistatic near-field scattering measurements are executed.

论文首先讨论了综合平面波的静区的产生和不同窗函数对它的形状、大小的影响。

A right hallow circular cylinder of quartz having its generator parallel to the principal axis liberates electricity when subjected to torsion about its axis.

割水晶成一圆柱，圆柱之轴即为晶体之光轴，在圆柱之中心穿一孔道，使成一空心圆柱壳，以金属箔敷於圆柱壳内外侧面成两电极。

The system utilized four laser scanners along lengthwise direction of the log. Data are obtained in every ten degrees when log is turning, in each cross section, 36 data are obtained. Then the data obtained were processed and an outline of the cross section of the log was developed on computer screen. Afterwards, the largest inscribed circles for log cross sections were determined according to the principle that three points can determine a circle. Secondly, the points located on the cross sections were linked up along some log generative in order to simulate the three-dimension log outline. At last the largest right circular cylinder were optimized and the optimum turning center was determined by means of projective theory.

具体作法是：在木段长度方向均匀设置四个激光传感器，当木段旋转时，起动激光传感器，进行数据采集，每隔10~0扫描一个点，在各横断面圆周上共采集36个点的数据，由计算机处理采集的数据，并绘制出原木横断面的几何图形，再根据三点定圆的原理，确定出最大内接圆；其次，模拟原木三维廓形，即将原木相邻横断面上离散点沿着母线方向连线，由计算机分析处理，绘制原木三维廓形；最后，采用投影法，优化出原木最大内接圆柱体，并确定原木回转中心线。

The flow around a stationary and in-line oscillating circular cylinder in a uniform flow at Reynolds number of 150 is studied by solving Navier-Stokes equations on a moving grid system described by Arbitrary Largangian-Eulerian method.

通过求解采用ALE方法描述的运动坐标系Navier-Stokes方程组，分析均匀来流下雷诺数为150的静止和流向振荡的圆柱绕流。

The main problem of dynamic characters for the Spar platform is analyzed and reviewed, and the research direction is determined based on the above analysis.The main body of the Spar is simplified as an isolated, truncated and vertical floating circular cylinder.

本文主要工作和结论如下：综述了深海平台的发展现状，重点对Spar平台国内外研究进展进行了综述，分析和评述了Spar平台运动特性方面存在的主要问题，明确了本文的研究方向。

This method is also available for other problems of unsteady flow around complicated bluff bodies at medium or high Reynolds numbers and the results are used as reference for wake control The phenomena of the sinusoidally oscillating flow past a circular cylinder are also studied.

本文应用有限差分方法求解涡量-流函数形式的N-S方程，数值模拟了园柱瞬时起动后流动分离、旋涡生成、脱落以及随时间推进涡街产生和长期非定常演化过程，包括对称涡的生成，二次涡形成的α结构及卡门涡街等。

The vortex shedding frequency spectrum characteristics on a heated circular cylinder in water cross flow was investigated experimentally.

但在实际中，许多工业设备是在气液两相流横掠柱体工况下工作，由于两相绕流问题的复杂性，目前这方面的研究还很少。

On the basis of three-step finite element method, the flow past circular cylinder with splitter plate is analyzed by using large eddy simulation turbulent model in single direction flow.

在三步有限元数值方法的基础上，利用大涡模拟湍流模型对单向流作用下带横隔板圆柱绕流进行了数值分析。

Main tower was the diamond-type, base 40.5 meters deep, 20 m × 30 meters circular cylinder-shaped caisson end, the main Tata 106.9 meters high.

主塔是钻石型，基地四十○点五米深， 20米× 30米圆柱型沉箱目的，主要塔塔一百零六点九米高。

METHODS: A circular cylinder-shaped whole-wall defect (6 mm diameter, 10 cm height) was made at 0.5 cm above femoral medial condyle.

于股骨内髁上段0.5 cm处制造直径6 mm，高为10 cm的圆柱状全壁缺损。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。