quasi-permanent field

The results show: ( 1) the distribution of swirling flow field in the said square-shaped separator has a forced swirl in the centre, but a quasi-free swirl near the side wall, and a partial swirl existing in the place of edge-angle.

结果表明：（1）方形分离器内的旋流流场呈中心为强制涡而边壁附近为准自由涡分布，在边角位置存在局部旋涡。

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An improved three dimensional quasi static model is developed from conservation equation for momentum and mass in a terrain following coordinate system, to simulate the winter wind field and temperature field over the eastern part of the Lanzhou basin.

采用地形追随坐标系下具有1.5阶精度的三维准静力模式，模拟兰州东部地区的风场和温度场。

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Using the dressed test particle approach to deduce the scattering power spectrum of radio waves by a quasi-equilibrium ionized gas in the presence of an external magnetic field

用试验粒子法求有外磁场影响时准平衡态下的等离子体气体的散射功率谱

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The thick accretion disk model with a QUASI-DIPOLE magnetic field

具有类偶极磁场的厚吸积盘模型

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The interconnection among multi-protocol intelligent field instruments and the performance simulation evaluation in the interconnection system are implemented by establishing the Quasi Timed Petri Nets model of Field Communication Control Device ( FCCD).

针对多协议现场通信控制装置FCCD，从理论上建立了FCCD系统的类时间Petri网模型，实现了多协议智能设备的互连及其系统的性能仿真评价。

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