Although usually easier to debug than other , more insidious erroneous behaviors , class - casting error messages are often symptoms of conceptual errors in recursively descending a composite data structure 类型转换错误信息通常表明在递归下行一个复合数据结构时出现概念性错误，虽然它通常比其它错误更易调试，但也具有更多隐蔽的错误行为。
In multi - step word problems , they were ' incorrectly translating unity number of the latent component quantity " , " misunderstanding the multiply signs as unity number " , and " misunderstanding division signs as a equal sign " 多步骤题型捉题之错误类型可归纳为： 1 .隐含元素的单位量转换错误； 2 .将直接表征为某一单位数； 3 .将二直接表征为平分。
Thirdly , the extended work to build a complete system is modelling and verification , which can maximize the performance of the system . error check of the states conversion is also finished in this step . for that , iec61499 standard based net condition / event system ( nces ) models are developed which fit in with the veda rules 系统设计的后续工作是对系统进行建模和验证，看看该系统是否符合最优化条件，是否存在执行上的状态转换错误等等，并在iec61499标准的基础上，开发出一套适合于veda建模与验证工具的功能块网络条件事件系统( nces )模型。
