伸缩变换 meaning in Chinese

stretching transformation

Since k ( x ) is not homogeneous and f ( x ) 0 , hence steady states can not be obtained by scalling . to overcome this , we construct super and subsolutions in a different way and give some very delicate estimates on them
由于k ( x )是非齐次的，且f ( x ) 0 ，平衡解不能通过伸缩变换的方法获得，为了证明我们的结果，我们将建立上下解，并对其给出精确的估计。
Though adopting the - coordinate transformation in the control equations and mode - splitting technique , the external mode ( surface gravity waves ) is solved by the improved double - sweep - implicit finite difference method ; the internal mode ( internal gravity waves ) untilizes the eulerian - lagrangian method , which improves the implicit - difference scheme for the vertical direction . the newly developed 3d numerical tidal model with implicit scheme has been successfully applied in the radial sandbanks area
基于过程分裂法及垂向坐标伸缩变换，外模式采用改进型双步全隐有限差分dsi法，内模式采用欧拉?拉格朗日公式，改进了三维垂向隐式格式，成功地建立了南黄海辐射状沙脊群海域三维全隐格式潮流数学模型。