这种过程语言不会象BPEL那样为不同活动定义明确的执行语义。
The process language doesn't define exact execution semantics for the different activities like BPEL does.
WS - BPEL是一种用来定义可以在一个编制引擎中执行的过程语言。
WS-BPEL is a language for defining processes that can be executed on an orchestration engine.
Erl用通俗易懂的语言,逐步描述了分析和设计服务或者面向服务的业务过程定义。
Writing in plain English, Erl provides step-by-step process descriptions for analyzing and designing any service or service-oriented business process definition.
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