基于半导体激光器的快速成型能量源

针对快速成型技术中存在的问题，提出了一种可选址驱动的半导体激光器线阵能量源新方案．在计算机软件与硬件控制下，以带尾纤的低功率半导体激光器光纤输出端集成的方法设计和实现了选址驱动能量源线阵雏形．用两组半导体激光器光纤输出端线阵交错排列补偿以形成一维长度为10mm、宽度为0．25mm连续线阵能量源．该方案原理可行，为将来实现高功率半导体激光器阵列在快速成型技术中的应用提供了坚实的基础．     

Recursive decomposition of software process

Based on the theory of the structure of the computable mathematical function, the operator of the software process, algorithm structure and architecture are defined mathematically in this paper. With the expression of combinational functions, the mathematical definition of the decomposition of operator and its operation is discussed. Finally, the mathematical formula of the decomposition of operator-operator recursive decomposition formula is established. While focusing on solvable problems, the concept of the computing prototype tree and its formula proposed in this paper has generality.      

平原河网区调水改善水环境实验研究

通过试验区河网原型调水实验研究,论证沿江平原河网区通过长江潮差引入优质的长江水,能有效增加河道的环境容量和水体自净能力,是迅速有效改善水环境质量的综合治理措施之一．