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.
答：先化验以下铁含量，如果铁含量高，可以采用磁滑轮抛尾。
Answer: the first to assay the following fe content, if iron content high, can use magnetic pulley cast the tail.
特殊制造技术，使滑轮具有强度高，运行灵活，噪音小等优点。
The special manufacturing technique makes the roller have the advantage of high intensity, flexibly running, less noise, and so on.
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