In this paper , system primary structure , subsystem design , system data flowchart , network structure and the alternative covering design algorithm to predict the price of coal are discussed in detail 文章詳細(xì)論述了系統(tǒng)總體結(jié)構(gòu)、子系統(tǒng)設(shè)計(jì)、數(shù)據(jù)流程、網(wǎng)絡(luò)結(jié)構(gòu)和煤炭?jī)r(jià)格預(yù)測(cè)的交叉覆蓋算法。
The thesis disserts the theory of object - oriented technology , the technology of autocad ' s further development in detail , and the analysis and design of the heat exchanger management system . according to real demand of a company in nanjing and the norm of software project , i design and develop the information management system that is up to , and give the detailed data flowchart and function module chart 論文對(duì)面向?qū)ο箝_發(fā)技術(shù)理論、 autocad二次開發(fā)技術(shù)和熱交換器信息管理系統(tǒng)的分析和設(shè)計(jì)進(jìn)行了詳細(xì)地闡述,并根據(jù)南京某公司熱交換器信息管理系統(tǒng)的實(shí)際需要,設(shè)計(jì)和開發(fā)了符合軟件工程規(guī)范的信息系統(tǒng),并給出了詳細(xì)的數(shù)據(jù)流程圖和功能模塊圖。