对称面

As applications, the 2nd elastic moduli are used to explain the effect of chiral angle on asymmetry behavior of torsion, and finite deformation problems of single-walled carbon nanotubes are successfully simulated by the thin shell model.

作为应用：利用面内的2阶模量解释了纳米管螺旋角相关的力学行为：扭转不对称现象。利用薄壳模型成功模拟了单壁纳米管的大变形弹性失稳行为。

Tractions and confinements are applied through two separate and "antisymmetric" stiff steel cages.

面力和分娩是通过两个独立的应用和"反对称"硬的铁笼里。

Distribution of luminous intensity having an axis of symmetry or at least one plane of symmetry.

对光源而言，至少有一轴对称或面对称的光强分布。

Under the electron microscope, the virus was circular, icosahedral symmetry and had the non-pouch membrane.

用磷钨酸负染电镜观察，病毒呈圆形、无囊膜，且呈二十面体对称。

There exists isomorphous replacement in the rutile structure, and the most prominent feature is the average content of oxides, being 1.22%, 0.39%, 0.35% and 0.22% for V 2O 5, Fe 2O 3, ZnO and CuO respectively. They substitute Ti 4+ in octahedra. The valence of V is 5, and its polyhedron is trigonal bipyramid, which causes the lattice distortion, breaks the raw octahedron symmetry into square bipyramid, and produces the microstrains in the structure.

天然含钒金红石平均含V2O5可达1.22％，Fe2O30.39％，ZnO0.35％，CuO0.22％，这些金属离子可替代八面体中Ti^4 。V以5价形式存在，配位多面体呈三方双锥，其在晶格内部对Ti的替代导致晶格畸变，打破了配位多面体原有的八面体对称而呈四方双锥的几何形态，并产生结构微应力。

It is shown that even for the case of vanishing IMF strength the bow shock is not rotationally symmetric with respect to the Sun-Earth line: the east-west dimension of the cross section of the bow shock exceeds the north-south dimension by about 9~11% on the terminator plane (dawn-dusk meridian plane) and its sunward side, and becomes smaller than the north-south dimension by about 8% on the tailward side of the terminator plane.

模拟结果表明，即便对于IMF强度为零的情况，弓激波相对日地连线也不具备旋转对称性质：终端面及其向阳侧的弓激波截线的东西宽度大于南北宽度（约9%~11％），终端面尾侧的弓激波截线东西宽度小于南北宽度（约8％）。

A virus is a unit of infectious genetic material smaller than any bacteria and embodying properties placing it on the borderline between life and non-life. The vast majority of the virus capsid protein assembled into icosahedral symmetry of the structure. Caspar-Klug Theory has become a fundamental concept for the classification of icosahedral viral capsids based on the principle of quasi-equivalence.

二：病毒是比任何细菌都小的感染性遗传物质，介于生命与非生命之间的一类无细胞结构的生物，绝大多数病毒的衣壳蛋白装配成二十面体对称的结构，&准等价&原理是解决严格遵从二十面体对称性的病毒衣壳几何特征的有效而成熟的方法。

The pollen grains are monad, small, radically symmetrical, and tricolporate, with a spheroidal to subprolate shape in equatorial view and three-lobed circular shape in the polar view.

结果表明，钩藤属植物的花粉为单粒，小型，辐射对称，赤道面观圆球形至近长球形，极面观3-裂圆形，具3孔沟，萌发沟裂缝状，长达两极。

A: There are no planetary alignments in the next few decades, Earth will not cross the galactic plane in 2012, and even if these alignments were to occur, their effects on the Earth would be negligible.

答：在今后的几十年当中，不会出现行星排成一条线的情况。2012年，地球也不会跨过银道面（译者注：银道面就是银河系的主平面。银河系成员如恒星、尘埃云及气体等，绝大部分都对称地分布在这个平面的两侧。

Anastomosis of severed facial nerve and accessory nerve could be helpful in restoring symmetry of the face,in preventing the face muscle from atrophy and in preserving shoulder movement.

颞骨切除后行面、副神经吻合，可大致保持面部肌肉对称，借助动肩以维持面肌运动，可有效的防止患侧面肌萎缩。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷