查询词典 critical area

Given a mesh, we first solve a Poisson equation to construct a scalar field and use it to generate some critical points. The cutting paths between the critical points and the boundaries are solved in the Poisson scalar field using the deepest descent method. For meshes with nonzero-genus, we construct a Harmonic scalar field, and connect the saddle points with the boundaries based on the Morse theory.

对于给定的任意网格，通过求解泊松方程构造标量场来选取临界点，并采用最速下降法给出临界点到边界或者初始点的切割路径；对于亏格不为零的网格，基于Morse理论，通过构造一个调和标量场来得到鞍点，并将它们连接到边界。

We cosider a class of semilinear elliptic systems with the Neumann boundary value condition by using variational methods, two existences theorem are proved for under critical exponents and critical exponents.

利用变分法讨论了一类带Neumann边界条件的半线性椭圆方程正解的存在性，并得到了在下临界指标时的两个存在性定理。

Considering the average critical gap of pedestrians walking through the vehicle flow and analyzing on large scale of data, it can reach the practical conclusion that the acceptable gap follows the normal distribution function N（4.86,1.72）. In order to make further analysis of the pedestrian delay,capacity and the conflicts with the vehicles,the average critical gaps are evaluated by three different ways.

通过研究行人穿越机动车流的平均临界间隙，对所观测的行人穿越间隙数据进行归纳分析，得出可接受穿越间隙的正态分布函数N（4.86，1.72），并通过三种不同的方法逐一计算出平均临界间隙，可为今后的行人延误时间、通行能力以及与车辆之间的冲突分析研究提供解决方案。

The uniform of nonlinear incremental equation at critical points or non-critical points are deduced, and the relations between incremental solutions and nullspace basis of incremental matrix are put forward. So the incremental solutions can be obtained directly by nullspace basis, and can be expressed nullspace basis of matrix.

推导了非线性增量平衡方程在极值临界点与非临界点解的统一形式，指出增量解与增广矩阵零空间基的关系，从而可直接由零空间基获得增量解，并直接表示为增广矩阵零空间基的形式。

The main works include: 1. successfully observed the opalescence of critical methanol and the phase variation of PET degradation in methanol, studied the internal construction of PET in different stages of degradation, provided the conception of critical region and noncritical region of system in which PET and methanol participated.

主要内容如下： 1 实验观测了甲醇的临界乳光现象及PET在甲醇中降解的相态变化，同时研究了不同降解反应阶段PET内部结构特征，在本实验研究的范围内提出了PET在甲醇中的系统临界区域和非临界区域的概念。

After t he critical opalescence phenomenon was studied systematically with dimethyl ether and HFC152a (1,1-difluoroethane), we found, there are some shortages and faults in the classical method to determine the critical parameters.

本文以二甲醚和 HFC152a 为实验对象，对流体临界乳光现象进行详细的实验研究。

The "critical divergence"," critical opalescence ", intensive oxidation, alterable dielectric constant, extraordinary solvating power and structure character of supercritical fluids are reviewed,and geological applications of supercritical fluids are discussed.

超临界流体具有一系列特殊性质，如，临界发散性、"临界乳光"、强氧化性、可变的介电常数、较强的溶解性等。

The critical parameters were determined as ρc = 442± 4kg/ m3, TC = 346.16 ± 0.05K and pc = 3.781± 0.006MPa by observing the disappearance of vapor-liquid meniscus and the critical opalescence .

基于汽液界面消失位置和临界乳光现象，测定了临界密度ρ_c=442±4kg/m~3、临界温度T_c=346.16±0.05K，由本文蒸汽压方程算出临界压力ρ_c=3.781±0.006MPa。

During the manufacturing of the critical intermediate cephalosporin nucleus --7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt, first the feasibility of the one-pot synthetic route of open loop, closed loop and ozonization when chlorine is passed over is qualified by experiments. Then the critical factors that will influence this reaction are studied as follows: the mol ratio of triphenyl phosphite and Diphenylmethyl 3-hydroxy-7-phenylacetaminoceph-3-em-4-carboxylate-l-oxide is four to one; the quantity of the stablizer should be at least more than two to one. The temperature of the system must be 25℃ when chlorine is passed over so that the hydrochloride can be precipitated to obtain cephalosporin nucleus of cefaclor--7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt.

在制备关键中间体头孢母核7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐时，先通过实验验证把开环、闭环、臭氧化三步在通入氯气时并为一锅煮的合成路线的可行性之外，又研究了影响该反应的几个重要因素：亚磷酸三苯酯与3-羟基-7-头孢烷-5-亚砜-2-甲酸二苯甲酯的摩尔比为4：1；稳定剂2-甲基-2-丁烯的用量至少大于2：1，通入氯化氢气体时体系温度在25℃时盐酸盐则能够顺利析出，获得头孢克洛的头孢母核—7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐。

March 20, 2003 Chest x-rays can be read by pediatric critical care physicians as reliably on bedside personal computers as on radiology work stations except in the presence of diffuse disease, according to the results of a paired comparison study published in the March issue of Pediatric Critical Care Medicine .

March 20， 2003 -根据一篇发表於3月份「小儿重症加护医学（Pediatric Critical Care Medicine）」期刊的研究结果显示，除了弥漫性肺疾之外，小儿重症加护医师也可以利用放射线工作站来读取患者的胸部X光摄影，就像床边个人电脑一样可靠。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"