key chain ring 钥匙扣链 ; 钥匙圈
Inner ring sorting is a key link in the bearing production and assembly chain.
轴承内圈分选是轴承生产装配过程中的重要环节。
To determine the repair ring is the key to the method of repair settle size chain, the main task is to define the reality size of repair ring and be sure to have enough and the minimum repair volume.
修配法解尺寸链，确定修配环是关键，即主要任务是确定修配环在加工时的实际尺寸，保证修配时有足够的、而且是最小的修配量。
The charm is attached to a cord using a metal ring and cylinder and included with the sets as a separate accessory that children can attach to the toy necklace, bracelet or key chain.
该小挂件用一个金属环和小圆柱附在一根绳索上，并且包括在该套件中作为一个儿童可以附在玩具项链、手链或钥匙链上的分离的附加物。
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