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resistance coefficient 2 第一达西数
It had high resistance to DDVP,resistance coefficient>9.5. 对敌敌畏抗性系数>9.;5;属于中抗水平。
The study on graphitization degree,porosity(volume density),purity,resistance coefficient and crystal structure etc of graphite is summarized. 文章针对人造金刚石用石墨材料主要性能的研究进行了综述,包括石墨化度、气孔率(体积密度)、灰分(纯度)、电阻率以及晶体结构等等。
Therefore the prerotation coefficient and the resistance coefficient could be used as major parameters to evaluate the performance of IGV. 针对风机调节门的流动特性，采用预旋系数、阻力系数做为全面评价风机调节门性能的主要指标是可行的。
Hydraulic resistance coefficient formulas are derived according to a great number of flume experiments and relative theory analysis. 通过系列水槽试验和相关理论分析，提出了十字片梅花加糙的有效水深和水力阻力系数计算公式。
Local resistance coefficient of water cut oil in the plunger is an important parameter to design and calculate in actual production. 含水原油在柱塞凡尔中的局部阻力系数是实际生产中进行设计、计算时十分重要的参数。
The ANSYS is able to calculate and report the resistance coefficient of the sampler or other marine instruments to instruct the instrument design. 利用ANSYS软件计算预报采水器或其他类似的海洋仪器在流体中的阻力系数，可指导其尺寸参数设计。
The mobility of the new water-series extinguisher is studied by means of surveying its viscosity, permeability, and mobile resistance coefficient. 摘要通过测定黏度、渗透率及流动阻力系数，研究了新型水系灭火剂的流动性能；
Based on the relationship between the resistance coefficient and gas Reynolds number, a new equation used for the calculation of the pressure drop was derived. 对实验结果进行回归得到了阻力系数与气相雷诺数的关系，并提出了新的气相压降计算模型。
The vertical velocity distributions in the vegetated channel and the relationship between resistance coefficient and flow depth were measured in laboratory experiments. 摘要通过模型试验测定了渠道中一种高棵、密集分布的植物，在淹没情况下的断面流度分布曲线及糙率和水深关系曲线；
The pre-straining prolonged the fatigue crack initiation life, and increased resistance coefficient and equivalent stress threshold of the fatigue crack initiation. 预应变可以延长疲劳裂纹形成寿命，提高疲劳裂纹形成的抗力系数和裂纹形成的当量应力门槛值；
In vehicle design, we consider reduction of wind resistance coefficient, and optimize tire and engine deadener design, which reduce noise considerable for passengers in car. 3在车身设计中，注意降低风阻系数，以降低噪声污染，加上优化的轮胎和发动机舱的隔音设计，使传递到乘客舱内的噪声大大降低。
The pre-straining prolonged the fatigue crack initiation life,and increased resistance coefficient and equivalent stress threshold of the fatigue crack initiation. 预应变可以延长疲劳裂纹形成寿命,提高疲劳裂纹形成的抗力系数和裂纹形成的当量应力门槛值;
The variation of seepage velocity, resistance coefficient, reservoir permeability and oil recovery in porous media of water-drive reservoir in direct current (DC) electric field are studied in detail. 实验研究了外加直流电场作用下水驱油藏多孔介质中的流体渗流速度、阻力系数、储层渗透率及原油采收率的变化特性。
It resistant coefficient also lineally with the particles velocity during special range. 阀体阻力系数在一定范围内随颗粒速度线性变化；
According to introduction, the shape design of the POLO involved the bionic theory.The curve of car body is smooth.The wind resistance coefficient reaches the optimal level with two-block car. 据介绍POLO的外形设计融入了仿生学理念（海豚的体形），整车曲线光滑流畅，浑然一体，风阻系数达到两厢车的最佳水平。
Based on the experimental data obtained from tests, a number of complex resistance coefficient of gas injector have been determined and the regularities of its variation is also found. 根据实验数据求得不同工况下的引射器综合阻力系数，并找到了该系数值的变化规律，对影响其大小的因素进行了分析。
Good corrosion resistance, especially for seawater corro-sion is better than highly resistant Portland cement and the corro-sion resistance coefficient is larger than1. 抗腐蚀性能好，尤其是抗海水腐蚀优于高抗硫波特兰水泥，抗腐蚀系数大于1。
Based on the Mohr-Column rule, the formula for calculating rock resistant coefficient is given in the paper, and the formula can be applied in kinds of rock conditions. 基于莫尔-库仑屈服准则推导得出的围岩抗力系数计算公式，具有较强实用价值。
In the flight kinetic model of cannonball and racket, discriminating and identifying the resistance coefficients is the important task. 在弹箭飞行动力学模型中,阻力系数的识别是一项重要任务。