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The miniaturization of the ion trap was achieved by using smaller pumps, a smaller vacuum system and lower RF voltage, as well as a simplified trap geometry (from hyperbolic to cylindrical, then to rectilinear).

离子阱的小型化是通过应用小型真空泵、小型真空系统及较低的射频电压和简化阱结构（从双曲线离子阱到圆柱型离子阱再到矩形离子阱）来实现的。

Theorem 2: the locus of foot point of the perpendicular line of between the origin and the tangent line of the cylindrical spiral is on the simple leaf camber hyperboloid of one sheet .

定理2 由坐标原点至圆柱螺线的切线所引垂线的垂足轨迹在单叶双曲面上。

D. of the precise, thin, long and straight cylindrical workpiece by use of the hyperboloid guide roller pair is discussed.

讨论采用双曲面导辊副对精密细长直圆柱工件外径进行贯穿式超精研的工艺方法。

Starting with the basic concept about particle transport and the universal form of transport equation, the discuss is concentrated upon the transport equation and the implicit difference scheme under 3-D Cartesian coordinate, as well as the transport equation and the discontinuous finite element scheme under 2-D cylindrical geometry.

从粒子输运的基本概念和输运方程的一般形式入手，重点讨论了三维直角坐标中子输运方程和隐式差分格式，以及二维柱坐标中子输运方程和间断有限元格式。

Good root system are associated with crop drought avoidance. To investigate the genetic factors of adaptive and constitutive root morphological traits under different water conditions, a recombinant inbreed line population derived from a cross between a lowland rice variety IR1552 and an upland rice variety Azucena with 249 molecular markers was used in cylindrical pot experiments.

为了研究不同水分条件下组成型根系性状和适应性根系性状的遗传机制，本研究利用由IR1552／Azucena发展的重组自交系群体分析不同供水条件下水稻幼苗根长及根系其它性状的QTLs，同时对前人发表的具有同一亲本Azucena的遗传群体定位的根系性状相关QTLs进行比较分析。

In this paper the induced charge distribution on a spherical petroleum tank due to lightning is calcuated with analytical method,and that on a cylindrical petroleum tank is calculated with charge simulation method.

文摘：本文用解析法计算了雷电先导在球形贮油罐上的感应电荷分布，用模拟电荷法计算了雷电先导在圆柱形罐上的感应电荷分布；并对圆柱形罐上架设的避雷针的保护特性进行了计算校核和实验校核。

Sori borne on the basal segments of the pinnules, indusium cylindrical, mouth hardly dilated and lobed; receptacle protruding, curved, dark brown.

孢子囊群生於小羽片的基部裂片上；囊群盖筒状，口部几不扩大和分裂；囊群托长而突出，弯曲，黑褐色。

It has important significance to consider backward stochastic Volterra type integral equation in infinite dimensional space.By a similar calculation as in the second part,we study this kind of equations driven by cylindrical Brownian motion under non-Lipschitz condition.

3在无穷维空间中研究倒向随机Volterra型方程也是有着重要意义的，论文利用与第二部分相同的思路将前面的结果推广到无穷维中，在非Lipschitz条件下对由柱Brown运动驱动的这种方程建立了解的存在唯一性。

In creep buckling question,by means of theoretical analysis,the instaneous critical load and durable critical load of viscoelastic braid composite cylindrical shell under axial compression are obtained and the numerical example is given.

对蠕变屈曲问题，通过理论分析来得到了编织复合材料圆柱壳的瞬时弹性临界载荷和持久临界载荷，给出了具体的算例。

The method based on cylindrical carrier model to use Watson transformation rebuild the path of integration along a steepest descent path on which the integrand decays most rapidly.

该方法根据圆柱载体的特殊结构，利用Watson变换将电场积分路径进行改造，改造后的积分路径缩减了求解电场过程，从而提高了积分计算效率。

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。