It was only at two points in the year that the night and the day were of equal length and that was at the spring or fall equinox.
一年之中只有两次，白天和夜晚的长度一样，即春分和秋分。
Vector dS is a vector which points perpendicular to the surface and whose length corresponds to the surface element.
向量dS与曲面垂直,并且它的长度与面积元素有关。
It's endured at two points or above for an unprecedented length, eight months and counting.
2%或更多的差距的持续时间前所未有已经达八个月了，并仍在持续。
The focal points of designing cyclone separator were involved in cylinder length, dimension of inlet and outlet pipe, cone and filling tube.
简体的长度、进气管和排气管的尺寸以及锥体和下料管是设计旋风分离器时要考虑的重点。
Cmd_len: the length in bytes of CMDP that points to the SCSI command.
cmd_len：指向SCSI命令的cmdp的字节长度。
The observation of longitudinal horizontal displacement of an earth dam is to observe the relative strain of the length between two displacement points.
土坝纵向水平位移观测是观测两两位移点间长度的应变值。
Computer simulation is put up to analyze the effect of randomly holding points on cotton length measurement.
采用计算机模拟的方法，分析了夹持点涨落对测量棉纤维长度的影响。
Objective: To study the best entry points, direction and length of screw in acetabular anterior column lag screw technique.
目的：研究髋臼前柱拉力螺钉内固定技术中螺钉的最佳进钉点、方向和长度。
Each team gets certain points according to the length and the accuracy of the words.
最终每组的得分按照他们所拼出单词的长度与正确率所决定。
Objective to study the best entry points, direction and length of screw in acetabular anterior column plate technique, and to prevent the serious complications of screw penetrating the joint surface.
目的研究髋臼前柱钢板内固定技术中螺钉的最佳进钉点、方向和长度，预防发生螺钉穿入关节内的严重并发症。
It also points out that the magnetic field of unlimited length solenoid cannot be calculated only by Ampere 's Loop Law.
指出无限长载流螺线管的磁场是不能仅由安培环路定理求出的。
If two vanishing points are not available, focal length cannot be estimated automatically and must be entered manually before the lens model can be solved.
如果两个消失点并不可用，焦距不能估计自动和手动输入必须在透镜模型可以解决。
An approach to extract feature points on the boundary based on length of arc is proposed in view of the key problem of measuring composite-shape parts.
针对组合形状零件几何尺寸测量中的关键问题—轮廓识别，提出了一种基于弧长的轮廓特征点提取的方法。
He determined the length of the shortest line segment joining the two points.
他确定了连接那两点的最短线段的长度。
Note: the Numbers on the branch points of the phylogenetic tree represented bootstrap values of the tree (1 000 replicates); Scale length represented genetic distance.
注：系统树分支点处的数字代表系统树的自展值(1 000次重复)；标尺长度代表遗传距离。
Get the rope length just right to score massive points, too much and it's curtains!
用恰恰好的绳索长度，以获得大量积分，太多的话会卷起来！
The extension of a length called the gauge length is studied during the test. The points that indicate the ends of the gauge length are called the gauge points.
被称为标距长度的这段长度延伸问题将在测试进行时研究。指示标距长度的端点的各个点称为标距点。
Adopt digital computerized control system, needle stitch , stitch length, Automatically positive and negative points, backstitch , stitch pattern setting , one screen operation, easy to operate.
采用电脑数字控制系统，针距、珠点、半针按钮，自动正反点、倒缝、花样线迹设定，一屏操作，轻松方便。
Analyzing the experimental datum by regression, it draws the different influences of the modification of the weights of two kinds of control points on length of NURBS curve.
将实验数据回归分析，在此基础上得出两类控制顶点权因子的改变对NURBS曲线长度不同的影响结果。
Through the control of critical points as the FRP length, number of FRP layer and mechanical property of adhesive, which is useful for restraining debonding failure.
通过对纤维布粘贴层数、长度以及粘结胶力学特性等关键要素的控制，可以有效地抑制粘结剥离破坏的发生。
The longer the chain length of straight chain monoacids is, the stronger the effect on the cloud points is.
直链一元酸的加入均使浊点下降，且酸的碳链越长影响越大。
An artifice of passing through and evaluating bifurcation points and an improvement for the arc-length method are presented.
一个跨越和求取分支点的技巧和对弧长法的一个改进在文中提出。
The method spends less interpolation calculating time and assures interpolation points stand in theoretical curve, and as well as equal feeding step length can be obtained.
该方法插补计算时间短，而且保证插补点落在理论曲线上及进给步长相等。
The method spends less interpolation calculating time and assures interpolation points stand in theoretical curve, and as well as equal feeding step length can be obtained.
该方法插补计算时间短，而且保证插补点落在理论曲线上及进给步长相等。
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