查询词典 symmetrical

The galaxies appear smooth and symmetrical, suggesting that they have not been tidally disrupted by the pull of gravity in the dense cluster environment.

这些星系显得光滑、对称，显示出它们还没有被稠密星系团环境造成的引力潮汐所分裂。

A modified transformable periods and symmetrical LFM radar wave signal is presented.

提出了改进型变周期的对称三角形LFM 雷达波形信号。

Chordates are bilaterally symmetrical, triploblastic, segmented coelomates which demonstrate a deuterostomic pattern of early embryonic development.

脊索动物两侧对称、三胚层，分节的体腔，在胚胎发育的早期过程中，显示为后口类型。

Many devotees of Japanese ceramics are more partial to the earlier "tsubo" jars, which tend to be more irregular and less symmetrical than later pieces.

许多信徒的日本陶瓷更偏重于早先的&壶&9，078，往往是更为不规则的，那么对称比晚件。

Tall evergreen having a symmetrical spreading crown and needles growing in umbrellalike whorls at ends of twigs.

高大的常绿树种，树冠对称展开，小枝末梢长有伞状针叶。

By the mutual action of its structure and of the laws of light, perspective is produced, which integrates every mass of objects, of what character soever, into a well colored and shaded globe, so that where the particular objects are mean and unaffecting, the landscape which they compose, is round and symmetrical.

眼睛的结构与光学的法则互动，产生出所谓的&透视&，因此任何一组物体，不管它是何种东西，在我们看来都觉得色彩清晰，明暗层次鲜明，井然有序，整体就似乎是一个球；个别的物体或许形态拙劣，了无生趣，但一经组合，就变得对称而完满了。

By the mutual action of its structure and of the laws of light, perspective is produced, which integrates every mass of objects, of what character soever, into a well colored and shaded globe, so that where the particular objects are mean and unaffecting, the landscope which they compose is round and symmetrical.

眼睛的构造，配合光学原理，相互作用，乃产生了透视，因此任何一组物体，无论其为何种性质，我们一眼望去，都觉得色彩分明，明暗有序，有立体感；个别物体也许平淡无奇，但一经组合，就成为对称而完整的景致。

Energy deposition at the interface of the particles caused by micro-explosive welding in explosive consolidation of metal powders is analyzed by symmetrical impaction model of uncompressible liquid. Two-dimensional equation of energy in the flow field of explosive welding is deduced and solved by finite difference method. Then the distribution of the temperature in the flow field is calculated on the basis of considering the adiabatic compression.

摘 要：以不可压缩理想流体对称碰撞模型对金属粉末爆炸烧结中由微爆炸焊接引起的颗粒界面附近沉积的能量进行了分析，在考虑热传导效应的基础上推导出了焊接流场中二维形式的能量方程并用有限差分法对其进行了求解，在考虑冲击绝热压缩贡献的基础上计算出了焊接流场中的温度分布。

Results indicate that radial distance of the bushing from the rotor center and the radius of the hemispherical bushing significantly affect wear rate,and minimzing both two values will result in lowest wear for micro-rotor systems in MEMS.However,it is noted that the bearing radius sets a lower limit on the hemispherical bushing radius since the bushings are located beyond the rotor inner radius.It is desirable to reduce their effects on friction and wear on micro-rotors by regulating the radius of the bushing and the radial distance of the bushing from the rotor center within permissive range of micro-fabrication.Severe wear exists with increasing applied load and rotating speed of the rotor.Stress distributions in the contact region are different from Hertz solutions due to the convergence stresses apearing on the uncontinuous curvature line and the contact pressures display symmetrical parabola in the contact region.

结果表明：在MEMS微转子系统中，微转子轴衬偏心距离和转子轴衬半径影响线磨损率，以两者减至最小为较理想，但须注意设计中轴承半径的限制，并使轴衬偏心距离大于轴承内半径；在转子加工制造许可的范围内，可以通过调整转子轴衬的半径和偏心距离来减少摩擦磨损对微电机的影响，随着转子所承受载荷和转子旋转速度的增加，其磨损严重；接触区的应力分布不同于经典Hertz解，这是由于应力集中出现在不连续的曲率线上，且接触区的接触压力呈现轴对称抛物线状分布。

The proposed interpolation algorithm is implemented for symmetrical and unsymmetrical corners.

拟议的插值算法是对称的，并实施了非对称的弯道。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失