三角形转换 Transformation
星形三角变换 star delta transformation ; [电] Y-delta transformation ; delta-Ytransformation
三角代换法 Trigonometric substitutions ; trigonometric substitution
星形三角结线变换 star to delta convertion
星形-三角形转换开关 star-delta switch
星形三角形切换起动器 star-delta switching starter
三角转换 Triple Rotate
星形三角形转换开关 star-delta switch
三角形转换法 Triangle Conversion Method
浮点数表示法，含部份换轴之高斯消去法，使用矩阵大小之计算尺度调整，带状及三角对角系统，LU分解。
Floating point representation, Gaussian elimination with partial pivoting, scaling of computations with matrix size, banded and tri-diagonal systems, LU decomposition.
而采用直角三角形法、换面法和旋转法求出一般位置直线的实长对于提高工作效率和数据的准确度有着重要的意义。
The essay recommends three ways of assessing the substantial length of straight line in average positions, which turned out significance in improving efficiency and precision of data.
研究表明，流体剧烈变化的热物性、浮升力以及三角管的几何特征对管内流动换热的影响非常明显。
The results suggest that the effects of buoyancy force, variable physical properties of the fluid, and duct geometric characteristic on flow and heat transfer can be very significant.
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