Prefixes are used to identify components of a bearing and are usually then followed by the designation of the complete bearing, or to avoid confusion with other bearing designations.
前缀是用来确定轴承的组成部分，通常其后跟有完整轴承的型号，或用来避免与其它轴承型号混淆。
2
This paper introduced the slim hole drilling designation and operation in shallow gas bearing reservoirs of Chuanxi area.
介绍了川西地区浅层天然气小眼井钻井设计与施工情况。
3
Appropriate snap rings are shown in the product table with designation and dimensions and may be supplied separately or already mounted on the bearing.