一种是“可变参数内插法”，另一种是用契比雪夫多项式对卫星直角坐标进行高阶内插的方法。
One of them is "the interpolation of variable parameters" and the other is the higher order interpolation of rectangular coordinates of satellites by means of Chebyshev polynomial.
大地纬度的解算是从地心直角坐标到大地坐标变换的关键，通常都用采用迭代法实现。
The computing of latitude is the key of geodetic coordinate transformation from geocentric coordinate which conventionally USES iterative methods.
建立了斜齿圆柱齿轮侧面及齿根面的直角坐标方程序，应用矢量法确定盘形铣刀齿刃与轮齿侧面及齿根面接触线上各点的参数值。
Parametric values on the contact lines of disc cutter blade and the side surface cogwheel, disc cutter blade and gear root surface are determined by using vector method.
用泰勒级数法推出直角坐标系下亥姆霍兹方程的七点差分格式和九点差分格式；
The seven-grid difference format and nine-grid difference format of Helmholtz equation in right coordinate in the way of Taylor series method have been derived.
该法利用大地直角坐标，直接用坐标放样法进行放样，计算简单，提高了作业效率。
This method makes use of the geodetic rectangular coordinates and setting out by coordinates to setting out the adding stakes directly, the calculation is simple and increases work efficiency.
本文在延拓法基础上对光滑实心转子异步电机电磁场进行了三维直角坐标系多层理论研究。
The paper shows the research of the multi-layer theory of smooth solid rotor induction machines.
本文在延拓法基础上对光滑实心转子异步电机电磁场进行了三维直角坐标系多层理论研究。
The paper shows the research of the multi-layer theory of smooth solid rotor induction machines.
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