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1.a seat consisting of a board and a rope; used while working aloft or over the side of a ship.
由一块板和一根绳子组成；用于在高处作业或在船侧作业。收藏指正
2.This article introduces its working priniciple and its structure features of the pipe type of skimming machines rubber belt type of skimming machines and weave rope type of skimming machines, and discusses its uses in treating with the floating grease in industrial wasted water.
本文介绍了管式撇油机、带式撇油机和编缆式撇油机的工作原理和结构特性，并就其在处理工业废水中浮油的应用进行了讨论。收藏指正
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