初升的旭日——DVD刻录机将何去何从？

2002年是CD刻录机大丰收的一年。一方面CD—R刻录速度达到了惊人的52倍速，CD—RW擦写速度也达到了24倍速．另一方面价格不断下降．主流刻录机已降到500元以下。然而CD刻录机速度疯狂提升和产品价格不断下降都掩盖不了一个事实．那就是普通CD—R／RW盘片的容量仅为700MB．如果想要备份海量数据．它就无法满足要求了。在这个硬盘容量动不动就100多GB的时代，人们对海量数据备份的需求呼声也越来越高．DVD刻录机正如初升的旭日。然而．DVD刻录机有众多标准．我们不禁呐喊：DVD刻录机将何去何从？     

7缸智能柴油机供油单元

重庆跃进机械厂所属大连海跃船舶装备有限公司生产山首台具有世界一流技术水平的7RTflex58T—B智能柴油机供油单元．已运往大连船用柴油机厂装机。这标志着重队跃进机械厂投资必建的大连海跃公司已成为国内旨家为主机厂提供功能单元的企业．并具备了一流的生产研发能力。     

MMM testing and failure analysis of fastening bolts on reciprocating compressor cylinder cover

To avoid the serious accidents caused by the failure fastening bolts on reciprocating compressor cylinder cover,a new nondestructive testing(NDT) technology,metal magnetic memory(MMM) testing,was applied to safety evaluating and failure analyzing for the fastening bolts.Based on the dynamic stress calculation of the failure bolts,MMM testing was carried out at workshop.Given are the MMM stress distribution characteristics of the failure bolts and fracture faces.It has been found that the MMM signal variation amplitude of the crack transition zone in the fracture surface is minimal,that of the crack initiation zone is in the middle,and that of the tear fracture zone is maximal.The failure reasons were analyzed with MMM effect.The results of the metallographic examination showed that the validity and feasibility of MMM testing and failure analysis.This means MMM technology is a new,fast and validity method of failure analysis.     

煤矿采掘工程图形CAD管理系统软件的研制

介绍了煤矿采掘工程图形ＣＡＤ管理系统软件“矿图之星”研制的基本思想和技术途径．     

"抢渡长江"问题数学建模及求解分析

对“抢渡长江”问题进行了分析，建立了一种函数极值的数学模型，分析了解题思路和初等求解方法．