流

The law of the influence of contractive angle of taper nozzles and curvature radius of convergence nozzles' convergent section on jet structure parameters is revealed, and it can provide a basis for optimization selection and design about laser cutting nozzles.

揭示锥型喷嘴收缩段收缩角、收敛型喷嘴收敛段抛物线曲率半径对射流的流场结构参数的影响规律，为激光切割喷嘴的优化选择和设计提供有效依据。标签激光技术激光切割会聚型喷嘴流场结构流体动力学 laser technigue laser cutting assemble nozzle jet structure hydrokinetics

The authors choose the proper regress methodology ac- cording to the characteristics of our panel data.

在根据面板数据本身的特征选择适宜回归技术的基础上，通过研究发现，在通过家族控股上市而形成的民营上市公司中，年度内董事会会议次数对企业的市场价值有显著的正向影响，而在通过兼并重组取得控股地位的民营上市公司中，这种影响并不显著；在考虑控股股东现金流权与投票权分离程度的调节作用后发现，随着控股股东现金流权与投票权分离程度的提高，年度内董事会召开会议次数的增加有利于企业市场价值的增加。

Using predecessor's experiences,also taking account of Coriolis force and three directional coal gas flow,the trajectory mathematical model of burden flow is built.

在总结前人料流轨迹计算模型的基础上，考虑了科氏力及三个方向煤气曳力对炉料运动的影响，建立了料流轨迹数学模型。

The numerical results were proved to be reliable by comparing with some published experimental data. The results show that, when only Coriolis force is in effect by omitting the centrifugal buoyancy force, the flow in the cavity is axi-symmetrically stable, the Coriolis force is a kind of resilience, and does not cause flow unstably.

研究结果表明：在哥氏力的单独作用下轴向通流旋转盘腔内的流动基本上是稳定的三维轴对称结构，即使有轻微的径向或周向振动发生，由于哥氏力是恢复力，对其有抑制作用，因此振动会随着流场的发展逐渐消失。

By calculating the current-current propagator of the model G/H=SU(2)_L×SU(2)_R/SU(2), it is found that the pure gauge fields on coset space contribute only a perimeter law factor which has no influence on confinement properties of the system.

具体计算了陪集G/H=SU(2)_L×SU(2)_R/JU(2)模型的流-流传播子，发现陪集空间纯规范场只提供一个线度律因子，不影响物理系统的禁闭性质。

Firstly, it studies the relationships among cost, price, sales quantity and profit, and gives a optimal allocation model of indirect fixed cost and its calculating method for the firms using cost-plus pricing,. Secondly, it studies systematization of cost flow control technology and embedded it into MRP-Ⅱ. Then the model of integrating cost flow control and material flow control is presented.

本文一方面研究了成本—价格—销售量—利润之间的关系，为采用成本加成定价法的企业提出了一种间接固定成本在不同产品上的优化分摊模型，并给出了计算方法；另一方面将成本流控制技术系统化，并将其有机地嵌入MRP-Ⅱ系统中，提出了将成本流控制与物流控制有机集成的管理模式。

In this process the main body of two-fluid flows counter-current, but in the adjacent flow channel and in the countercurrent flow is also

在这种流程中两流体的主体流向是逆流，但在相邻的流道中有并流也有逆流

The granularity distribution is great improved after the filtration of stage treatment slurry on phosphogypsum (the crassitude phosphogypsum rate is increased and the fine-crushing decreased).

选用适合的分级设备对湿法磷酸反应料浆进行分级处理，分级底流送过滤机过滤洗涤，分级溢流作为晶种返回反应槽进一步长大。

After classification under flow(the crassitude phosphogypsum are crystal),the intermediate are transmitted to filter for filtration and washing.As crystal seed of classification overflow(the fine-crushing phosphogypsum are crystal)is returned to reactor and further crystal.

选用适合的分级设备对湿法磷酸反应料浆进行分级处理，分级底流送过滤机过滤、洗涤，分级溢流作为晶种返回反应槽进一步长大。

To meet the requirement of evaluation and optimization of the workflow model, an extended critical path method was proposed to support two extra structures that traditional critical path methods do not considered.

针对工作流模型的结构特点，建立了一种扩展的关键路径分析法，增加了对工作流常见结构——可选路径和循环的支持。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了