查询词典 torus

Some patients'oral anatomy is not good, and bring difficult to repair.Before the repair,doctors shoule examine the patients'oral circumstance detailly,do away with the apophysis ,torus and hyperplasia gingival, make the good preparation work.

一些患者口腔解剖条件不好，给修复带来了极大困难，在修复之前要详细检查口腔情况，将骨突、骨刺以及较大的骨隆突手术去除，将增生的牙龈组织切除，作好准备工作。

In chapter 2 we use harmonic 1-forms and discuss the relationship between an almost nonnegatively Ricci curved n-manifold with the first Betti number equal to n and a flat n-torus.

在第二章中我们利用调和1-形式研究了第一贝蒂数等于n且Ricci曲率几乎非负的n维黎曼流形和n维平坦环面之间的关系。

Critical pressures of the cylindrical shells stiffened by rings with semi-torus section and by circular tube are calculated and compared.

在公式推导的过程中，考虑了加肋的实际分布情况，并编制了计算程序，对半圆环界面加肋圆柱壳和圆管加肋圆柱壳的临界水压进行了比较。

So before applying Mather's theorem of connecting orbits to concrete Hamiltonian system, we have to check whether the set W〓 is empty or not, and which cohomology classes are C-equivalent. In present paper, by investigating the topological structure of action minimizing sets near a co-dimensional one torus which is preserved under generic perturbations and becomes hyperbolic in nearly integrable Hamiltonian system.

与传统的Poincaré-Melnikov方法相比，我们方法明显优越之处在于，一方面我们的方法不仅可以得到双曲环面之间的异宿轨道，而且当该环面附近的其它环面破裂时，可以得到不同Mather集之间的连接轨道，另一方面，我们把异宿轨的存在性的证明转化为双曲环面极小同宿轨的某种弱孤立性的证明，所需条件比Poincaré-Melnikov方法弱得多。

The most important idea is that over the complex numbers, an elliptic curve looks like a torus, and the points of finite order in the group of the curve have a very simple geometric description.

最重要的思想是复数域上的椭圆曲线是一个环面，曲线簇中的有限阶点有简单的几何描述。

An analysis of the intersection of torus/sphere based on coordinate transformation

同一点在两个不同的坐标系中的两种坐标之间的变换。

In chapter 6 and 7, having discussed the description method of the shape of bube-bent part and it's CSG data structure, a 3-D shape description method of using boolean operation by cyclinder and torus primitives is proposed.

第六章和第七章分别探讨了管材弯曲件三维描述方法及其CSG数据结构，提出了采用圆柱体素与圆环体素，通过适当布尔运算来描述其三维形状，并实施区间CSG扫描线和光线跟踪算法，在微机上实现了管材弯曲件三维浓淡图形的生成。

The pellet injection and the electron cyclotron resonance heating system have been involved in the China Torus Current Device No.

在中国环流器一号（HL－1）等离子体物理实验中，增加了弹丸注入和电子回旋共振加热系统。

The doughnut-shaped object enclosed by a torus.

被一个圆环围起来的多纳圈状的物体。

The stable winding equations of the elbow torus and cylinder are established according to different geometry, and the winding pattern of the geodesics of torus and semi-geodesics of cylinder are also achieved.

根据微分几何建立弯管的圆环面及圆柱面稳定缠绕方程，给出了圆环面的测地线缠绕解及圆柱面的半测地线缠绕解，并提出了用OpenGL及VC++对所设计的线型进行仿真的具体实现办法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。