但乡村对人类步进的贡献相比城市似乎谨小慎微。

But the rural contribution to human progress seems slight compared with the urban one.

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提出了一种基于阻抗动态步进的PVZ曲线快速求解方法。

This paper proposes a fast method of computing PVZ curves using load impedance as dynamic step.

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针对控制棒水压驱动机构单个水压缸的步进性能，通过实验获得了水压缸步进的动态过程。

The dynamic stepping motion of a hydraulic cylinder for the control rod hydraulic drive mechanism (CRHDM) was tested experimentally.

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