The pull control of long transportation belt is a very important link in the entire transportation system.
长输送带的拉力控制是整个输送系统的一个十分重要的环节。
The control lines on port and starboard that pull the jib sail in or out.
左舷和右舷上用来将前帆拉出或收起的绳索。
Results: The pull out strength of BMG group were higher than that of control group.
结果：BM G组各时期拔出强度明显高于对照组。
Results: The pull out strength of BMG group were higher than that of control group.
结果：BM G组各时期拔出强度明显高于对照组。
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