经营杠杆是衡量企业经营风险的重要标志。一般而言，经营杠杆系数越小风险越小。
A business lever is an important sign for measuring enterprise business risk Usually, the smaller the business lever coefficient is, the smaller the risk is.
提出了用置信下限作为混凝土检验批强度标志值的估计量的新方法，给出了单侧容限系数的表达式。
A new method of estimating concrete strength representative value by means of a confidence lower limit is presented in this paper, and one-side tolerance factor expression is given.
用来表示出口、撤离路线、禁止吸烟、灭火设备、大门推拉标志等事项的安全标志应在最显著和最适宜的地方显示，以使更多的人察觉到，从而提高安全系数。
Safety signs for exits, escape routes, no smoking and fire fighting equipment, push-pull signs on doors etc., should be prominently and optimally displayed for awareness and to improve safety.
本文研究关系数据库理论中空值在函数依赖中的语义问题，提出了带标志空值的关系中函数依赖的三种定义。
This paper deals with the semantics of null values in functional dependencies in database theory, and presents three different definitions of FDs in a single relation with marked nulls.
本文研究关系数据库理论中空值在函数依赖中的语义问题，提出了带标志空值的关系中函数依赖的三种定义。
This paper deals with the semantics of null values in functional dependencies in database theory, and presents three different definitions of FDs in a single relation with marked nulls.
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