To new china airline group corporation , the key to success relies on taking the source advantage and developing competitive advantage . the purpose of this thesis is to study the market and product strategies for china airlines group based on contemporary background in the 21st century , using the basic economic theories . the content of the thesis is focused on three facets 对于中国航空集团公司而言，只有抓住契机，借鉴国外航空公司的先进管理经验和技术手段，降低成本，强化产品与市场研究，实施差别化产品策略与新技术战略，建立起枢纽辐射性航线网络，实现规模经济，推广无缝隙服务，提高竞争优势，才可能在激烈的国际竞争中占据一席之地。
Compared with cotton , vinylon has stronger tenacity and elongation , better abrasive resistance , stronger hygroscopicity , and better heat preservation , and it has better resistance to chemical corrosion , sunlight , moth , mold , and radiation as well . vinylon can be spun with cotton or other fibers into knitting goods and other cloth . it is also used as industrial fiber for the manufacture of tire cord , conveyer , fire hose , fish net , ropes , canvas , filter cloth , and rubber items etc 维尼纶是以聚乙烯醇为原料纺成的合成纤维，其性能与棉花相似，与棉花相比又有强伸度大耐磨性好吸湿性强的优点和更好的耐化学腐蚀性耐晒性耐蛀霉性保暖性及耐辐射性等，可与棉花及其它纤维混纺以织造针织物及其它用布，同时作为工业用纤维，广泛用于制造轮胎帘子线运输带水带鱼网绳索帆布过滤布及橡胶制品等。
According to the findings of a study by the city polytechnic university to measure the levels of radon daughter which is a potentially lung - cancer - causing radioactive substance in mass transit railway stations in the territory , 23 out of the 31 underground mtr stations have levels of radon daughters exceeding the average level in the world 根据城市理工大学一项测量本港地下铁路车站“地铁站”内含有可引致肺癌的辐射性物质氡子体水平的研究结果，在全港31个建于地底的地铁站中，有23个所含的氡子
