sheave block

基本解释

Fixing arrangement of spreader with sheave block of crane shall be quick acting and simple.
固定吊具起重机滑轮座的安排应速效和简单。
qingxiafanyi.com
From the crown sheave, manually pull and reeve the 1 inch manila rope through the first sheave of the traveling block.
用人力把棕绳从天车轮上拉过来，再穿过第一个游车轮。
blog.sina.com.cn
This simulation impact test bed of vehicle is composed of base mounting, guide rail, sheave block, draw gear, recovery device and impact block.
汽车模拟碰撞试验台由基架、导轨、滑车、牵引装置、回收装置及碰撞壁组成。