英国人认为，如果提升海平面，会将假想的线从沿地球曲线的海岸延伸到喜马拉雅山下方的某个点。
The British assumed that carrying in sea level would extend an imaginary line from the shore along Earth's curve to a point beneath the Himalaya.
故建立适当的数学模型，然后编写程序对其进行优化，并绘制了相应的变化曲线，来实现连续提升器。
So we need to design a program to improve the function and draw the relevant changing curve to optimize the function of the continuous elevation machine.
CU7直线管、提升型结构压降最小，流量特性曲线平稳圆滑。
The straight line, poppet-type construction of the CU7 minimizes pressure drop and provides smooth flow characteristics.
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