Note, however, that Presentation MathML still encodes aspects of the mathematical semantics.
但要注意，PresentationMathML仍然编码数学语义方面。
They often focused on complex mathematical theories (such as the Pi-Calculus) without ever validating if these theory's semantics would actually be enough to support a business process execution.
他们经常关注复杂的数学理论（如Pi-Calculus），从来不去验证这些理论的语义是否真的足够支撑一个业务过程执行。
The disadvantage of it is lacking a formal semantics and difficult to apply, directly, mathematical techniques on UML models for system validation.
但UML的缺点是难以直接用数学工具对uml模型进行检验，另外uml在语义方面也存在一些不足。
The representation of tolerance semantics is systematically deduced based on its mathematical definition that can characterize the semantics exactly an…
基于公差的数学定义，系统地推导了各种类型公差的三维语义表示方法，准确完整地表示出了其语义；
The representation of tolerance semantics is systematically deduced based on its mathematical definition that can characterize the semantics exactly an…
基于公差的数学定义，系统地推导了各种类型公差的三维语义表示方法，准确完整地表示出了其语义；
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