方向

We take sech form ansatz and solve the CNLS equations through variational approach. We obtain the analytical expression of nonlinear coupling term, which is in the lagrangian of CNLS. We apply a potential well model to analyze the interaction properties of self-trapping beams in detail, the results show that the interaction do not change the profile of the beams, two beams keep oscillating around their collective center periodically. The amplitude and period of this oscillation are both determined by initial separation of two beams.

我们采用Sech函数为试探函数，用变分法求解CNLS方程，（1）给出了CNLS方程所对应的拉格朗日中的非线性耦合项的解析表达，（2）利用势阱模型详细分析两自陷光束之间相互作用的特性，结果表明，相互作用没有改变孤子的形态，它们分别在与传播方向垂直的方向上绕它们的公共中心做往复振动，振动幅度及周期都取决于两光束的初始分隔。

Combined with engineering practices, this article proposes that feeder section is regarded as graph, the nodes inside the section are treated as vertexes of graph, and the lines between nodes as arcs.

结合配电自动化的工程实际问题，提出将馈线区间作为一个图，并将区间内各节点作为图的顶点，节点间线段作为图的弧，以线路潮流的方向作为弧的方向，并由此建立了配电网馈线区间的数学模型。

Because the Self may very well wish one to go in a direction that the ego would prefer not to go in-a direction that might lead not to a path of self-aggrandizement but to a path of sacrifice.

因为自己可能非常期望一个人进入一个自我不期望进入的方向--一个不能走向自我发展的路的方向而是走向牺牲的路。

With the new lattice, images can be decomposed in 45 and 135 degree with multiscale separable directional wavelet transform.

应用这种抽样栅格可对图像进行多分辨率的45度和135度方向上的可分离二维方向小波变换。

But today the pressure is in the opposite direction, towards ethnic separatism.

可是如今的趋势是朝相反方向，朝民族分离主义的方向发展。

We can't choose the direction of the wind,But we can choose how we set the sail.

我们不能选择风的方向，但是我们可以选择往哪个方向航行。

Applying the Whitney-Riley model to the soil-root complex, calculating formulas, which were related to modulus of elasticity E in direction of plant roots growth, modulus of elasticity E to be vertical to direction of plant roots growth and shearing modulus G in plane of plant roots growth, were established.

运用Whitney-Riley模型，推导出土壤—根系复合体根系生长方向的弹性模量E、垂直于根系生长方向的弹性模量E和根系生长平面的剪切模量G等工程常数的理论计算公式，为进一步研究土壤—根系复合体工程特性提供了一种方法，具有一定的参考价值。

The shearing stress on an octahedral plane is used as a rarameter to analyse crack -producing problems under mixed mode fracture and the crack producing direction is considered as the direction with mimimal displacement from crack tip to plasticity boundary.

本文采用剪应力强度因子作为断裂的参数，分析复合型断裂问题，认为裂纹扩展方向为塑性区最短距离方向。

The residual stress in the thickness after one LP and multi-LP and the distribution of residual stress after single pill and multi-pills shot the sheet metal are analyzed.

数值模拟分析了激光单点喷丸板料后，材料厚度方向的残余应力分布，以及激光多点。多排喷丸板料后材料厚度方向的残余应力分布。

In the permission that paper silk thread of direction and finished books back in line.

在允许的情况下，尽量使纸张的丝缕方向与成品书籍的书背方向一致。

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。