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Model calculation and analysis of heat and mass transfer of air and water in a direct contact forward flow

性质：在程序控温条件下用质谱(飞行时间质谱或四极杆质谱)测量从物质中释放出的挥发性产物的性质和数量与温度的关系的一种技术。

And one of the important elements such as air tank, control valves, air motors are described, calculation and selection, but also for the aerodynamic design of a bicycle storage device.

并对其中的重要元件如贮气罐、控制阀、气马达进行了说明、计算和选型，还为气动自行车设计了一种贮能装置。

The calculation shows that with air-breathing propulsion, the maximum velocity is limited.

计算分析发现：空气呼吸模式推进飞行器的最大速度有限；烧蚀模式可以使飞行器产生很高的速度，提高冲量耦合系数和比冲，有利于提高飞行器的最高速度；两种模式相结合的推进方式提高了有效载荷比，但能源利用效率比烧蚀模式要低。

A new network routing algorithm is proposed, which follows calculation rues of logic algebra and calculates routes with depression of order transformation of incidence martrix. For network with m nodes, m-2 times depression of order transformation operations can get all routes between two nodes. Furthermore, it accords with the communication transmission rules and avoids the close loop routes.

提出一种网络路由新算法，是按照逻辑代数运算规则，以关联矩阵降阶变换方式计算，对于有m个节点的网络，只需m-2次距阵降阶变换运算，就能够算得网络两节点间全部路由，且不会出现闭环路由问题，完全符合通信传输规则。

Numerical or general algebraic expression vector, matrix calculation.

进行数值的或一般代数式的向量、矩阵的各种计算。

We posed the concept of sufficient intersection about s(1≤s≤n) algebraic hypersurfaces in n-dimensional space and proved the dimension of polynomial space Pm(which denotes the space of all multivariate polynomials of total degree≤m) on the algebraic manifold S=s(f1,…, fs) where f1(X=0,…, f s=0denote s algebraic hypersurfaces of sufficient intersection, then gave a convenient expression for dimension calculation by using the backw ard difference operator.

给出了n维空间中s(1≤s≤n)个代数超曲面充分相交的概念，证明了n元m次多项式空间Pm在充分相交的代数流形S=s(f1，…， fs)（f1=0，…， fs=0表示s个代数超曲面）上的维数，并利用倒差分算子给出一个方便计算的表达式；构造了沿代数流形上插值适定结点组的叠加插值法；证明了在充分相交的代数流形上任意次插值适定结点组的存在性；给出代数流形上插值适定结点组的性质和判定条件。

In order to coordinate internal force calculation in ALGOR FEAS, the preceding processing program and post processing program are worked out.

为了配合ALGORFEAS的内力计算，本文还用Visual Basic编制了前处理程序和后处理程序。

In this paper, the practical model for calculation torsion is set up in ALGOR FEAS, which is 3-D girder element model with rigid arms. The model is better used to calculate the effect of deviation load.

本文在ALGOR FEAS中建立了一种计及扭转的实用模型—带刚臂的三维梁单元模型，用此模型能较好地计及荷载偏载效应。

While calculating tensor Green's functions, the algorithm of secondary division is adopted to solve the singular problem. The Gaussian quadrature and continued fraction is adopted to calculate the integral with Bessel function. This method not only can ensure the right calculation of tensor Green's functions but also can get high precision.

求取张量格林函数积分时，采用二次剖分算法解决计算中奇异值问题，对于含有贝塞尔函数的积分项，利用结合连分式展开的高斯求积代替常规的快速汉克尔变换方法，确保了张量格林函数的正确计算并提高了计算精度。

So the latter can be applied to adaptive model algorithmic control to reduce calculation and response time.

因此这种算法可以用于模型算法控制，减少控制算法的运算量，提高控制的实时性。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。