And by the analysis of my own design work, the paper summarized the common design methods based on feature line in different type of design assignment of product exploitation.
并通过对设计实例的分析，总结了针对不同类型的产品开发设计任务利用特征线进行产品设计的一般方法。
2
The test result provides a new line of thought for the exploitation and utilization of refractory iron ore resources.
试验结果为难选铁矿资源的开发利用提供了新的思路。
3
The article recounts the structure of on-line auto monitoring system of noise, and discusses the difficulties that meet during exploitation and the problems which need to be solved eagerly.