等速线

Using the fluid mechanics theory, the Gauss filtration governing equations are presented based on the incompressible Navier-Stokes equation in primitive variables, which are discretized using standard third-order accurate Galerkin finite element scheme in space and discretized using finite differencing scheme in time.

为了考证数值模拟结果的正确性，对水泥在圆弧弯管中的气力输送气固两相流动采用了等速取样和等截面法进行了三种工况的试验研究。试验结果表明，竖直上升弯管出口颗粒浓度在弯管外侧脊线附近颗粒浓度特别高，其余部分相对比较均匀且浓度较低。

LI Fu-ming Jiangbei Machinery Plant, Sichuan Province, according to Centrifuge the conical spiral screw blade of the physical characteristics of the establishment of a constant velocity spiral line equation in polar coordinates.

四川省江北机械厂李福明，根据螺旋卸料离心机的圆锥形螺旋叶片的形体特点，建立了等速螺旋线的极坐标方程式。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。