对称

Amitosis and asymmetric division play an important role in PC12 cell pleomorphism. The asymmetric division possesses important significance in tumorigenesis and differentiation.

无丝分裂和不对称分裂是PC12细胞多形性形成的主要原因，肿瘤细胞无丝分裂及其不对称性对肿瘤发生及肿瘤细胞的分化具有重要意义。

Effect of amphetamine and phencyclidine on DNA binding activities of serum response and dyad symmetry elements .

影响安非他明和苯环的DNA结合活动的血清反应和对子对称要素。

Hirayama disease should be considered for young patient,especially male patient,with asymmetrical amyasthenia and amyotrophy in the hand and forearm.Hirayama disease can be diagnosed if MR abnormalities of the lower cervical dural sac and spinal cord are seen in a fully flexed position.

当遇到青少年出现手及前臂不对称的肌无力和萎缩而无感觉障碍时，应首先考虑有平山病的可能，可进一步行屈颈MR检查，出现下颈髓及其硬膜囊的特征性表现可确诊。

With this model analytical solutions for differential equations of the projectile's motion within an ideal bore can be obtained. Comptations for some projectile...

求得了对称弹丸在理想身管中的运动微分方程的解析解，并对某些弹炮系统进行了计算，得出了一些有用的结论。

We propose experimentally feasible schemes to implement the optimal asymmetric economical 1→2 and 1→3 phase-covariant cloning,which work without ancilla,in the context of ion-trap system.

我们提出利用离子阱技术来实现1→2和1→3的最优非对称经济型相位协变克隆的实验可行性方案。

The characteristics of asymmetric impinging streams were measured with hot wire anemometry and simulated with CFD.

华东理工大学资源与环境工程学院，上海 200237摘要采用恒温式热线风速仪测量不对称撞击流流场。

The axial velocity and stagnation point offset of two opposed jets coming from two asymmetric nozzles oppositely located with large separation distance were studied by using hot-wire anemometry.

采用热线风速仪对大喷嘴间距下两不对称喷嘴形成的对置撞击流的轴线速度分布和驻点偏移规律进行了实验研究。

It has been proposed that extra centrosomes generate CIN by promoting multipolar anaphase, a highly abnormal division that produces three or more aneuploid daughter cells.

人们长期所持的一个观点是，额外的中心体通过诱导混乱的多极纺锤体组装和非对称的细胞分裂来促使染色体错误分离。

Theoretically the approximate conditions of the surface wave diffraction were analyzed,and the corresponding analytic expression of angle width of diffraction patterns was derived,which explained the asymmetry distribution well.

理论上对表面波衍射的近似条件进行了分析，得出了各级衍射条纹角宽度的解析表达式，解释了衍射条纹的非对称分布。

Note that the signal amplitude is nominally flat, despite the varying range and angle of incidence associated with scanning.

波的轮廓以中心对称这个PPS系统的特征是扫描过程使接收能量在接受器表面移动的结果。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。