gas flame造句

• Transmission characteristics of gas flame in pipelines with coal dust
  有沉积煤尘的管道内瓦斯火焰传播特性
• The main products company crane xin licensing gasoline , kerosene , diesel oil and other series flame blowerand continental flame blower , liquefied gas flame blower , gaideng not only the best - selling also sales overseas , was praised by chinese and foreign customers
  公司生产的主要产品鑫鹤牌汽油、煤油、柴油等系列喷灯及欧式喷灯、液化气喷灯、汽灯不仅畅销全国还远销海外,深受中外客户的好评
• The content of this paper contains : chapter one introduces the basic concepts , developing course , research significance , application foreground and the present research state of other countries in the world . chapter two introduces the structure characteristic and the performances and applications in the areas such as mechanics , physics and chemistry , then analyzes the present state , existing problem and developing trend of nanotubes research . chapter three introduced several synthesis methods and purification methods of nanotubes and nanofibers detailedly . chapter four concentrates on the research of two foreign research groups who use carbon - hydrogen gases flames to produce carbon nanotubes
  论文的主要结构如下：第一章介绍了纳米材料科学的基本概念、发展历程、研究意义、应用前景及世界各国的研究现状。第二章阐述了碳纳米管的结构特征以及力学、物理和化学等各方面性能和应用，并且分析了碳纳米管这种新型碳材料研究目前现状、存在问题及发展趋势。第三章详细介绍了碳纳米管和碳纳米纤维的几种传统制备方法及纯化方法。