Therefore, there is no exactly standard defination of service even more obscured by people's subjective assessment.

因此，服务没有一种衡定的标准，人为的主观参与判断也更模糊了服务的标准。

The article puts forward its views on the reasons for establishment, defination, design theory and principles, types and teaching tactics of biological activity course.

本文在丰富生物课程结构方面作了一些探讨，就生物活动课产生原因、设计理论与原则、类型及教学策略等方面提出了自己的观点。

This paper introduces the defination of multiplicity automata and analyzes the relationship of multiplicity automata and deterministic automata or non_deterministic automata.

简单介绍了多路自动机的定义，分析了多路自动机和有限自动机的关系，包括确定的有限自动机和非确定的有限自动机，并且给出了例子。

The main problems of operational risk measurement are that if operational risk can be quantified, defination of operational risk, loss defination, modeling data and model risk etc.

操作风险度量研究需要重点解决操作风险可否计量、操作风险界定、损失界定、建模数据和模型风险等问题。