要是您想用一小块线程安全代码把要求同步的两个操作隔开，那么只使用一个同步块一般会更好些。
If you have two operations that require synchronization separated by a small block of thread-safe code, you are generally better just using a single synchronized block.
Business Events要求输入事件和出站操作对象符合一般xml格式，如下所述。
Business Events requires that input event and outbound action objects conform to a general XML format, as described here.
石油和天然气工业。海底作业系统的设计和操作。第1部分：一般要求和推荐标准。
Petroleum and natural gas industries - Design and operation of subsea production systems - Part 1: general requirements and recommendations.
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