backus中文什么意思

例句与用法

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1. Describes the format of fully qualified type names in terms of the backus - naur form , and the syntax required for specifying special characters , assembly names , pointers , references , and arrays
   按照巴科斯范氏( backus - naur form ) ( bnf )来描述完全限定类型名称的格式，并描述在指定特殊字符、程序集名称、指针、引用和数组时所需的语法。
2. In this thesis , the following issues of the eliank - general - report - system are researched : the ebnf ( extended backus - naur form ) definition of this system , lexical analysis , syntax analysis , the semantic analysis of assignment - statements and auditing - statements and balance - rules , the calculation of assignment - statements and auditing - statements , keeping the report balance and error - equilibrium after it is rounded off
   本论文重点研究了此系统中的以下几个问题： ebnf范式的定义；词法分析、语法分析；赋值语句、审核语句、平衡规则的语义分析；赋值语句和审核语句的计算；报表舍位平衡与误差均衡化。
3. On the basis of displacement - time series of the slope , a nonlinear dynamic model is set up according to backus generalized linear inversion theory in this paper . due to the equivalence beween autonomous gradient system and catastrophe model , a standard cusp catastrophe model can be obtained through variable substitution . the method is used in analysis of displacement data of huangci landslide and wolongsi landslide and in understanding how slopes evolve before sliding . the result shows that the nonlinear dynamic model can make satisfactory prediction result . is it most important that there is a sudden fall of d , which indicates the occurrence of catastrophe ( when d = 0 )
   研究表明，滑坡变形失稳过程具有混沌和分维特性，可以用分形理论来研究滑坡预测问题，基于对任一连续函数，至少在较小的邻域内可以用多项式任意逼近的数学理论，运用改进的backus广义线性反演理论，以斜坡位移时间序列为基础，反演了斜坡演化的非线性动力学模型。并利用自治梯度系统与突变模型的等价性，通过变量代换得到标准的尖点突变模型。