极限点

As growth rates are near the critical velocity of absolute stability limit by the calculation according to M-S theory, it must be considered that deep cells may keep their cellular structure.

当凝固速度近绝对稳定临界转变点时，KGT模型和Hunt-Lu数值模型与试验结果有较大的差别，其原因是这些模型的计算均未考虑到深胞晶在速度高于MS理论计算的绝对稳定平界面极限后仍能保持自身稳定性而造成的； 8。

It is mathematically strict without any differential approximate calculation and is supposed to obtain the maximal precision of the floating-point operations of computer.

在数学上也严格成立，数值编程计算不存在差分近似，精度达到了计算机浮点运算的极限精度。

Firstly part of quadratic term of Taylor series is chosen; a low-dimension surface is used to approximate limit state surface ; and the modified reliability formula is derived.

首次选取泰勒级数的部分二次项，用一个距原点最近点处拟合的超低维曲面近似极限状态面。

Under the situation of even distribution of fitting nodes,a mathematic model is established by means of the relation between the number of fitting nodes and the limit error of measurement.

建立了采样点均匀分布情况下，圆度误差测量采样点数量与测量极限误差之间的定量关系数学模型。

It is proved that two sequences of Markov maps on the circle generated homeomorphic inverse limit spaces if each pair of the bounding maps with the same subscript are of the same Markov type with respect to a fixed arrangement of the two partitions.

证明了圆周上两个关于两组固定分点的Markov映射列在相同下标的两个约束映射总是关于两组分点的固定次序Markov同型的条件下生成同胚的逆极限空间。

A line considered a limit to a curve in the sense that the perpendicular distance from a moving point on the curve to the line approaches zero as the point moves an infinite distance from the origin.

渐近线与曲线极限相关的一条直线，当曲线上某动点沿该曲线的一个分支移向无穷远时，动点到该直线的垂直距离趋于零

And the stationary point was found to be a saddle point.

提出了识别和计算极限诱导分岔点和鞍结分岔点的2阶段混合算法。

I think it is very slippery, especially the outside line, and there are a few very special corners, like turn one and three, where you can't see the entry of the corner so you have to guess what is the turn-in point, and this is not easy, especially in single lap qualifying when you have to push, you have to get the maximum.

赛道很滑，特别是赛车线外的地方，还有很多特别的弯道，象1号和3号弯道，在那里你是看不到进弯点的，所以你必须推测哪里是进弯点，这可不容易，特别是象一圈的排位赛中，你不得不开的激进些，把赛车推到极限。

The extreme value of binary function at f_f_-f~2_=0 is judged by its direction derivative which follows ray starting from stable point and passing point P at every point P in noncentral neighborhood of stable point .

用驻点的去心邻域内各点P处函数沿以驻点为端点的过点P的射线方向的方向导数是否同号，来判定二元函数f在fxxfyy-f2xy=0时的极限。

The program can be used to track the limit load and flex point of space structure, can take structural imperfection into consideration, gets the buckling model and vibration model of three-dimension steel structure, analyzes the elastic-plastic status or stress distributing of any intersection and any point and draws the nephogram of stress distributing, the hysteretic line subjected to cyclic load and local buckling deformation.

本软件能够跟踪分析任意空间结构中各种反弯点和极限荷载、并能够考虑结构的缺陷分布影响、求解三维空间钢结构屈曲模态和振动模态。进而分析钢构件任意截面、任意点的应力分布及塑性屈服状态，绘制截面的应力分布云图及循环荷载下的滞回曲线，绘制钢构件的局部屈曲变形图。

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。