任意两个企业(据其独一无二的企业键的定义)之间都可能会形成关系。
Relationships may be formed between any two businesses (as defined by their unique business keys).
当我们能够清楚无二义地联系任何关联结尾和外键时，我们可以把通讯应用于指明外键指向的是哪个主键。
When we are able to relate without ambiguity any association end to a foreign key, we can apply the correspondence to specify to which primary key the foreign key refers.
结构独特、无键连接、高铬板锤、独特的反击衬板；
Special structure, keyless connection, high-chromium plate hammer, particular impact liner;
应用推荐