液压爬行是影响液压缸低速运动性能的主要因素。
Hydraulic crawling is the main factor effect low speed moving performance of hydraulic cylinder.
可应用于负载较轻，中短距离，低速运动等场合。
Applied in the condition of light load, medium or short distance, slow speed etc.
通过计算，详尽分析了点电荷低速运动时，周围空间电磁场分布情况，并给出图示。
By calculating, the article analyzes in detail the spread situation of electric magnetic fields in round space when the point electric charge moves in a low speed, and makes the diagram.
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