The average efficiency of (cleaning) can arrived at 87.5% in the WOT characteristics, 85.2% in load characteristics and 80% in free accelerate (experiment).
外特性试验的平均净化率达87.5%，负荷特性试验的平均净化率为85.2%，自由加速时的净化率为80%。
The characteristics of crab gantry crane are high load-and-unload efficiency, high frequency of start, brake and big intensity.
抓斗装卸桥的特点是装卸效率高，但起制动频繁且工作强度大。
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