noun
（易拉罐等的）拉环；易拉环 a small piece of metal with a ring attached which is pulled to open cans of food, drink, etc.
When the tester is used , the counter weight can be just sheathed with a small ring of a pull handle of the tester again , and the operation is simple , convenient and quick .
在要使用测定器时，重锤可套回测定器的拉手小环即可，操作简单方便快捷。
