文档介绍：ICS 53. 100 P 97 JB/T 2300 -1999 回转支承 Swing bearing 1999-09-17 发布 2000-01-01 实施国家***局发布 I 前言 1 范围······························································································································· ····················································································· 1 2 引用标准······························································································································· ·········································································· 1 3 符号······················································&