应用因次分析法推导出表征巷（隧）道火灾烟流滚退距离变化规律的通用无因次表达式，该表达式包含影响滚退距离的火源热释放速率、通风风速、巷道倾角和形状等因素。
A non-dimensional expression, which shows the general variation of the backflow distance of smoke and hot gases during a roadway or tunnel fire, was derived through dimensional analysis.
长时间运行的流程无法像微流那样回滚，不过，它们可以使用补偿处理程序撤消先前执行的活动。
Long-running processes can't be rolled back like micro-flows, however they can have compensation handlers to undo previously performed activities.
中介流是作为事务提交或回滚的。
Mediation flows are committed as a transaction, or rolled back.
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