The pump consists of three sections from bottom to top: the hydraulic section, the shaft seal section and the motor section.
主泵由三个部分组成(由下而上)：水力部件，轴密封部件和电机部件。
The hydraulic section consists of the inlet and outlet nozzles, casing, flange, impeller, diffuser, pump shaft, pump bearing, thermal barrier and thermal barrier heat exchanger.
水力部件由以下组成：出入口管，壳体，法兰，叶轮，导叶，泵轴，泵轴承，热屏和热屏热交换器。
It is shown that the optimal hydraulic section for compound canal has smaller section area and narrower breadth of water surface than trapezoidal canal by calculation and comparison.
并通过算例比较证实，复合断面水力最佳断面的面积和水面宽度比梯形水力最佳断面的小。
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