代数和 meaning in English
algebraic addition
algebraic sum
Examples
- Net present value is the cumulative present value of income ( positive values ) and a series of future payments ( negative values ) from a series of investment cash flow using a discount rate to handle time values of money
净现值是指在项目计算期内，按行业基准折现率或其他设定折现率计算的各年净现金流量现值的代数和。 - This course is designed to introduce graduate students to the foundations of database systems , focusing on basics such as the relational algebra and data model , query optimization , query processing , and transactions
课程描述本课程设计的目的是给研究生介绍数据库的基础知识，关注于基础，如关系代数和数据模型，查询优化、查询处理和事务。 - " physics and chemistry - you can t do them without laboratory study ; and you ll find algebra and geometry almost hopeless with instruction . you need the skilled teachers , the specialists in the art of imparting knowledge .
“物理和化学没有实验课你是学不会的，你还会发现代数和几何若是不听课也学不会，你需要的是熟练的教师，传授知识的专家。 ” - Because of the van der waals repulsion between two substituents existed in chiral 1 , 2 - disubstitited ferrocene , the elevation angle of partial helix in the molecular structure is changed
由于手性1 , 2 -二取代二茂铁的两个取代基之间的范德华斥力，致使其分子结构中包含的部分螺旋改变了仰角，而这种改变使有关螺旋的旋光度代数和不为零，因而导致旋光性。 - Modern control theory has arisen with the advent of high - speed digital computers and characterized by the state variable concept with emphasis on matrix algebra and with analysis and design principally in the time domain
现代控制理论是随着高速数字计算机的出现而产生的，主要特点是使用状态变量的概念并强调矩阵代数和主要在时间域进行分析和设计。