切

Firstly, the quadric surface with three points which doesn't on one line is fitted, and then the tangent plane of this fitting surface is got. Meanwhile, the random tangent plane of surface patch subdivided is got also. Finally, the distance can be obtained through iteration between two tangent planes.

首先对点云数据中邻域不在同一直线的三个点进行局部二次曲面拟合，并求取该拟合曲面的切平面，同时求得细分曲面片任意一点处的切平面，最后在两个切平面上进行点对迭代运算，得到点到曲面片的最短距离。

Computer was used to analyze the possible secondary cleavage sites on HPV11 E2 mRNA and to predict the secondary structures of substrate and ribozymes. According to the theory of Symons headhammer ribozyme, there are 32 sites to targetting sequences.

遵循Symons锤头状核酶结构和GUX剪切位点原则，靶序列存在32个剪切位点，通过计算机软件分析核酶的最佳剪切位点，并对底物及核酶的二级结构进行预测及进行相应基因生物学功能和基因同源性分析，筛选出2个锤头结构核酶。

Secondly, the cutter of the machine was studied from reducing vibration, emphasis on knives array, homeostasis. To apply "ANSYS"method, At the same time, it was known that inherent frequency of the main axis was so far higher than vibratory frequency, and the machine main axis'rotational speed won't cause sympathetic vibration.

其次，本文从减少振动入手对9LRZ-80型秸秆揉切机的关键部件切碎器进行分析，着重对动刀片的排列、动平衡等进行分析研究，并通过有限元分析，得到切碎器主轴固有频率远远大于机器振动频率，机具的转速不会造成共振的危害。

The hyperbolic-type nonlinear model and rigid and perfectly-plastic model are usually adopted to simulate the constitutive behavior in tangent direction of contact surface. in fact, however, the hyperbolic-type nonlinear model can not definitely display the plastic flow deformation after shear failure while rigid-perfectly-plastic model can not describe the nonlinear deformation before shear failure.

对于土与结构间接触面的切向本构关系，目前通常采用双曲线非线性弹性模型或刚塑性模型来描述，但是，传统的双曲线非线性模型不能明确地表达剪切破坏后的塑性流动变形特性；而刚塑性模型又无法描述剪切破坏之前的非线性弹性变形。

During calculation of the tangent vector, the complete Jacobian matrix is adopted so that the tangent vector is computed accurately. During calculation of initial power flow and correction steps FDCPF is used.

该方法在切向量求取环节，采用完整的雅可比矩阵做系数矩阵求取切向量，从而保证切向量的准确性；在初始潮流计算和校正环节采用快速分解法进行求解。

I'm a president of translation group of the "www.chelseafc.net.cn". I really don't want to see the sina.com earning our club's money on one hand, and call her names on the other hand.

我是切尔西中文网的一个版主(不会翻译，就用leader了，冒犯了管理层了，望请冒犯)，我真的不希望看到新浪网赚着我们切尔西的英镑，还在说着切尔西的坏话。

Company Introduction: Ningbo Wenbai Machinery Manufacturing Co.,Ltd. specialize in manufacturing book binding machines. The products mainly cover three categories:1.loose-leaf binding machines : double wire forming machine, double wire binding machine, semi-automatic/ fully-automatic punching machine, spiral binding machine and related materials;2.perfect binding machines : various type paper-folding machines, gathering machines, three-knife trimmers, perfect binders, etc.3.corrugated box die-cutting machine: automatically plate-to-plate die-cutting machine,laminating machines, UV varnisher glazing machines, and overwrapping machines.

公司简介：宁波文百机械制造有限公司专业制造书刊装订类设备，产品主要分三大块：一是活页本装订系列产品，主要有双线圈成型机，双线圈装订机，半/全自动冲孔机，单线圈装订机及相关耗材；二是书刊装订系列设备，主要有各种折页机，配页机，三面切书机，椭圆胶订包本机等；三是包装系列主要有瓦楞模切类设备，主要有全自动平压平模切机，复膜机，UV上光及药品、食品包装产品。

In this article the measurement methods of drill shear wave velocity, principles and site classification are briefly introduced.

介绍了场地钻孔剪切波的测试方法、原理及场地类别划分方法，并对其进行了归纳、总结，指出选择适当的剪切波测试方法并作好剪切波测试是对建筑场地进行类别划分的关

Motibity changed by gear-box in direction and rotate speed is transferred to the blade axis on the right side to drive the blade axis. blade axis'parameter, blade assembling frame and blade assembling means are ascertained. The load and movement of the blade axis are analyzed. And the best blade rotate speed is ascertained. According to the request of no-tillage soil, the appropriate furrow openers are chosen. They are staggered and assembled in two rows .According to the sliding cutting request, the crucial parts of the anti-blocking——the sliding cutting blade, its edge curve is analyzed and designed in principle. The academic curve function is gotten. Combined with working practice and technics request, the blade's figuration parameter is designed, 65Mn is chosen as the material for blades. The working load is analyzed. And the intension of the sliding cutting is analyzed and checked with ANSYS software. At last, the spring rack of the suppress wheal is analyzed in principle. The theory and parameter of designing the spring rack of the suppress wheal. Experiment indicated that the anti-blocking capability of this anti-blocking equipment was excellent.

设计出适合此防堵装置的动力传输方案，动力经变速箱变向变速后从右侧传给刀轴，驱使刀片切割秸秆；确定出了刀轴的参数、刀片的安装结构和安装方法，对刀轴的受力和运动进行了分析，确定出了刀轴最佳转速；根据免耕地的要求，选择恰当的开沟器，并采用双排错位安装的办法，避免了"瓶颈"现象的发生；根据滑切的要求对此防堵装置的关键部件——滑切刀片的刃口曲线进行了理论分析和设计，得到了刀刃的理论曲线方程；结合生产实践及工艺要求，设计出刀片的外形参数，选择65Mn作为刀片的材料；分析和计算了刀片在工作中承受的载荷，运用ANSYS 软件对滑切刀片的强度进行了分析校核；最后对镇压轮的弹簧支架结构进行了理论分析，提出了设计镇压轮弹簧支架的理论和参数依据。

Now cut each chicken breast in half widthways and then slice each half into five or six long thin strips and then slice each of these in half lengthways so you end up with thin slivers of chicken.

现在把鸡胸肉切成两半，然后横向的把每半切成片，再把每片切成五或六条的肉，然后把每条切开两份，所以你完成了鸡瘦条的工序。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。