具有更快更多的起吊速度和多种滑轮倍率可供选择。
It has more and faster hoist speed and various pulley ratio which can be selected.
对实践中的滑轮的工作特点具有好奇心。
Be curious about the working characteristics of the pulley in practice.
结果是，两滑轮的活动塞具有相同的设计——考虑到设计的更加简单，尚且允许必要时高功率输出。
As a result, the two pulley pistons are of the same design - allowing for a more simple design, yet allowing high power output as needed.
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