rope block

• 滑轮

rope block的用法和样例：

例句

1. The lifting device is a system of rope and pulley.
   这种起重装置是由缆索和滑轮组成的。
2. A hitch in the middle of rope that has two eyes into which tackle can be hooked.
   绳中间的栓含有两个眼状物通过它能钩住滑轮。
3. The travelling block is one of the most useful rig parts.
   游动滑车是最有用的钻机部件之一。
4. Seize together,as of parallel ropes of a tackle in order to prevent running through the block.
   把滑车的平行绳子牢牢抓住，以免滑车通过滑轮转动。