According to the characteristics of stand management, this paper puts forward the general designing frame, the way of acquiring and expressing knowledge, the mechanisms of deducing and the method of dealing with imprecise information for stand managing expert systems, and also develops the prototype of them.
根据林分经营的特点 ,提出了林分经营专家系统的总体设计框架、知识获取和知识表达方式、推理机制以及不精确信息处理方法 ,并开发了杉木人工林林分经营专家系统原型 ,本系统根据用户所输入不同的年龄、林分密度和地位指数就可作出相应的林分经营决策 ,使森林经营决策科学
The effect of the structure of a leasing machine on the yarn tension is analysed, and how to keep the yarn tension constant during leasing is discussed for the purpose of ensuring high quality and high efficiency in daily operation.
通过分析分经机的结构以及对纱线张力的影响,论证了在分经工艺中如何控制纱线张力的恒定,确保在日常生产中分经工艺的高质、高效性。