场

According to the theorem Euler characteristic is equal to 2 on the sphere, it is show that this maps has at least one fixed point,that is to say the vector field has at least one singular point.

在地壳的每一点，由于受力定义了整个地壳上的向量场，然后利用同胚，将其转化为球面上的自映射，并根据球面的欧拉示性数等于2，说明该自映射至少有一个不动点，即向量场至少有一个奇点。

The structure of flow field and the aerodynamics along with the inner energy excitation and the variable flow conditions were analyzed in details.

采用L-B碰撞模型，分析了内能激发松弛的流场参数特性，从分子碰撞、分子与飞行器表面碰撞的角度，分析了不同来流条件下的流场参数的变化情况。

Stuckey missed the Pistons first 25 games last season after breaking his hand in their final exhibition game.

斯塔基在他们最后一场季前赛时弄伤了手，之后他缺席了活塞的前25场比赛。

"So I'm not going to say Kobe's not going to play in this exhibition game or that exhibition game. But there is a chance they may not play in an exhibition game."

"所以我不准备透露说科比将不会参加这场或者那场比赛，我只能说他可能缺席某一场季前赛。"

In order to realize the real-time monitoring of temperature field in furnace, the principle of two-dimensional temperature field reconstruction based on series expansion in acoustic computer tomography is analyzed.

为了实现炉内温度场的实时在线监测，阐述了基于级数展开法的二维温度场的声学CT重建原理。

The exchange field is found to change in an exponential function of 1/|t〓-t〓| in two wedged synthetic antiferromagnets FeMn/Co (t〓=12. 0nm)/Ru (0.7nm)/Co and FeMn/Co /Ru (0.7nm)/Co (t〓=12. 0nm). It has opposite signs and different magnitudes in above two series.

实验上制备了两个系列的楔形样品FeMn／Co／Ru（0.7nm）／Co，其中t〓=12.0nm及t〓变化和t〓=12.0nm及t〓变化，发现交换偏置场与厚度呈〓关系，而且这两系列样品交换场的符号相反。

In exterior differentiation, one studies tensors, exterior algebra, tangent bundle, tangent vector fields, one-parameter groups action on a manifold, Frobenius's theorem, tensors fields, exterior differential form, integration on manifolds, Stokes's theorem etc.

外微分部分主要涉及外代数、切丛，光滑切向量场，单参数变换群，光滑张量场，外微分形式，Frobenius定理，外微分形式的积分，Stokes定理及其应用等。

It is an eyeball- attractive cooperation 4 years ago, but now a dispute hard to judge.

4年前一场引人注目的合作，现在却成了一场说不清的纠纷。

Using this method, by rotating the light source and the observer eyepoint, the vivid projection images of structures of interest from different viewing directions could be produce...

结果通过对人体头部CT图像数据场进行三维旋转绘制，结果比较理想。结论由于不需要对整个数据场进行分类和旋转，该方法具有速度快、所需内存少和绘制质量高的特点，是一种较好的医学体视化方法

This paper presented an optical system of star sensor. The lens system was a complicated double- Gauss configuration which had an effective focal length of 51 mm, an F-number of F/1.1, a field of view of 21°×21°(2ω=30°),and a working wavelength rang of 0.5~0.85 μm.

介绍了一种用于卫星姿态控制的星敏感器光学系统，该光学系统焦距为51 mm，相对孔径为1/1.1，视场角为21°×21°（圆视场2ω＝30°），光谱范围为0.5～0.85 μm，采用了复杂化双高斯结构。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。