So, see, this coefficient becomes zero exactly when the line is perpendicular to the normal vector.
看到了吧，系数变为0了，当直线垂直于法向量的时候。
Nitrogen is the inert gases, low expansion coefficient, not easily with the environmental temperature rise for a long time, can maintain normal tire pressure, greatly reduce the flat tire.
氮气是惰性气体，膨胀系数低，不轻易随环境温度上升而上升，可较长时间维持正常胎压，大大降低爆胎几率。
As shown in the table, the parting coefficient is relatively low when parting skew components from normal components.
如表中所示，当分隔扭曲和正常时分隔系数相对比较小。
Acoording to the least square principle the normal equations and its coefficient matrix are performed.
按最小二乘原理，建立了球面坐标系下的法方程组及其系数矩阵的具体形式。
Coefficient of derail is used to judge whether a train is in the normal running state or in derail state.
以脱轨系数为依据判断列车能否正常行驶，采用响应面法求解失效概率。
In normal consolidation state the coefficient remains approximately a constant value.
当处于正常固结状态时，次固结系数近似为一常数。
And at the stage of group's normal operation, a team punishment allocation model based on allocation coefficient is set up, which can solve the "free-riding" problem caused by share contract.
而在集团正常运行阶段，建立了基于分配系数的团体惩罚分配模型，解决了产出分享合同所产生的搭便车问题。
Heat transfer coefficient data for normal heat transfer region and heat transfer deterioration region is correlated respectively.
分别在传热恶化前及传热恶化后两个区域内关联了传热系数数据。
The influence of average normal anisotropic coefficient on the flanging height can be considered in this model.
该模型考虑厚向(平均)各向异性系数对翻边高度的影响。
Residents of the town of the income gap has been widening, the Gini coefficient has reached about 0.4, which is not considered a variety of positions outside the normal and non-income revenue.
镇居民收入差距也在不断拉大，其基尼系数已达到0.4左右，这还不考虑各种岗位外收入和非正常收入。
On the basis of the normal form theory of vector fields, an algorithm to calculate the nonlinear participation coefficient is presented.
在向量场正则形理论的指导下，提出了求解向量场非线性相关系数的算法。
The higher the normal load, the smaller the effect of the lubricating oil inlet temperature and rolling speed on the traction coefficient.
随着载荷增大，入口油温和滚动速度对拖动系数的影响减小；
The coefficient matrix of normal equation which is comr puted strictly is used as the standard of controlling accuracy.
用严格计算的法方程系数矩阵作为控制精度的标准。
The results shows that: 1, The spatial change of the transmissibility coefficient of aquifer complies with the normal probability distribution.
结果表明，1）该含水层导水系数在空间上的变化服从正态概率分布；
If the coefficient matrix of the normal equation is ill-conditioned, the statistical character of adjustment parameter will become poor.
当法方程的系数矩阵呈病态时，平差参数的统计性质就要变坏。
The experimental tests show that the friction between cartilages in normal animal joints is very low and its coefficient of friction is in the range 0.002 to 0.02.
实验测定表明，正常动物关节内关节软骨之间的摩擦力是非常小的，其摩擦系数大约为0.002～0.02的范围。
The results indicated that it has high lubricity, its frictional coefficient is only about 1% of normal Foley catheter.
实验结果表明：这种超滑导尿管具有非常好的润滑性，摩擦系数仅为普通导尿管的百分之一左右；
Not only the influence of average normal anisotropic coefficient but also the one of R0, R45 and R90 on the flanging height can be considered in this model.
该模型不仅能考虑厚向（平均）异性系数，而且也能考虑R0、R45和R90厚向异性系数对翻边高度的影响。
The backscatter coefficient of hemorrhage lymphnode is smaller than that of normal lymphnode and changes with the frequency. The ultrasonic backscatter microscope technique is a useful device…
猪的出血性淋巴结组织的声散射系数比正常淋巴结组织的小，且随频率的变化而变化，背向散射技术是在高频段进行组织定征的有效手段。
Under normal production conditions, the die angle, friction coefficient, tube material and material temper can be neglected in the calculation.
双周数表通用性较强，在一般的生产条件下，可以不考虑模角、摩擦系数、管材材质及其状态等因素；
The influences of many contact parameters such as initial normal force, contact angle, contact stiffness and coefficient of friction were obtained.
获得了凸肩接触面初始正压力、接触角度、接触刚度、摩擦系数等多种参数对叶片非线性响应的影响规律。
Objective To measure the indexes of normal organ weight and organ coefficient of 10 kinds of usual SPF grade rats and mice.
目的测定10种常用sPF级大、小鼠体重、脏器及肠道等正常参考值。
Without assuming that retailer's revenue obey the normal distribution, we show that the best revenue-sharing ratio coefficient is the same.
在不假设零售商的收入服从正态分布的前提下，证明了最佳收入分享比例系数是相同的。
The results show that the heat transfer coefficient of wall surface is proportional to air velocity under normal airflow velocity, but it is not affected significantly by airflow direction.
研究表明：在通常室内风速条件下，墙体表面换热系数与风速速率的大小成正比，而风向对墙体表面换热系数的影响不明显。
Then the normal Reynolds stresses in square duct flow are calculated using the new model and coefficient functions, the results are consistent with the experimental data.
最后用方截面管流中有关二次流的实验结果对模型进行鉴定。 结果表明，给出的模型在槽道流动和方截面管流中都获得了满意的结果。
Once the regress analysis for the normal coring-interval data is completed, the calibration coefficient for whole well obtained.
用此方法只要用取心段的常规分析数据进行回归分析。
The results show that the probability distribution characteristic of the vertical permeability coefficient in fissured rock zone is much close to the log-normal distribution.
结果表明，同正态分布和均匀分布相比，裂隙岩体地区的垂向渗透系数更接近对数正态分布。
The normal population characteristics, such as the mean, standard deviation, percentile, percentage and coefficient of variation, are often tested in engineering.
正态母体特征值（母体均值、百分位值、百分率、标准差和变异系数等）的检验是工程中常见的问题。
The normal population characteristics, such as the mean, standard deviation, percentile, percentage and coefficient of variation, are often tested in engineering.
正态母体特征值（母体均值、百分位值、百分率、标准差和变异系数等）的检验是工程中常见的问题。
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