For example, the use of wheeled vehicles to transport goods and the separation of materials by gravity-gradient processes can be modified to be used in lunar conditions.

举例来说，轮式载重车辆和依赖重力实现材料剥离的技术，经过改进是可以在月球重力条件下使用的。

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In this paper, liquid water on the performance of a PEM fuel cell and mass transport is observed on different electrode relative position under gravity effect by experiment.

通过试验，观察了在重力作用下液态水对PEM燃料电池性能及其内部传质的影响，分析了PEM燃料电池单体电极的不同摆放位置对其性能的影响。

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According to the mechanism of current transport, we suggest a breakdown model in which charge accumulation, trapping density and position of its center of gravity are all considered.

根据电流传输机构，本文提出一种考虑了电荷积累、陷阱密度及其重心位置的击穿模型。

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