在JCA 1.5之前，应用服务器总是充当事务的协调者。
Prior to JCA 1.5, the application server always acted as the transaction coordinator.
应用系统可能包含协调者的角色，在某种程度上它变得越来越不清晰，为什么协议的必要性要远大于业务逻辑本身？
the application may subsume the role of the coordinator at which point it becomes less and less clear why the protocol is needed at all above and beyond the business logic itself.
这些程序启动计算机并且起作所有硬件组成部分和应用软件的主要协调者。
This kind of softwares start your computer and be the main coordinator between all the hardwares and application softwares.
这些程序启动计算机并且起作所有硬件组成部分和应用软件的主要协调者。
This kind of softwares start your computer and be the main coordinator between all the hardwares and application softwares.
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