邮轮旅游是一项高产值、高回报率的休闲旅游经方式济,有“漂浮在海上的黄金产业”的美称。邮轮旅游这一产业在中国形成规模比较晚,所以目前仍处于初级发展阶段,但是在“一带一路”高峰论坛将邮轮旅游作为我国新时期发展的重要方向之后,近年来发展速度迅猛,各大邮轮公司纷纷向中国市场投入了更多资本,期待可以率先抢占中国市场。中国有13亿多的人口,市场广阔,但是有精力时间参与邮轮旅游的游客还是以中老年人为主。所以根据
In order to determine the threshold and potential distribution of climatic conditions for perennial cultivated grasses in the Northwest plateau of Sichuan, Chin
19世纪末，列强掀起瓜分中国的狂潮，英国在华利益受到极大的挑战，对华政策紊乱，在力主“门户开放”与维护长江流域特权间摇摆不定。1900年到1906年，萨道义担任英国驻华公使，见证了英
<正> 弧形工件在图纸上都只标注半径及公差,即R±Δ。半径测量常在万工显上用弓高法进行,然而弓高公差的确定一直没能很好解决,一般是测量前根据图纸所给的基本尺寸R,用
There are many oil and gas conventional reservoirs in Saudi Arabia have been exploited, but still there are also need to be explored and produced especially in
Graphic correlation method has been proved to be very useful in correlating sections in different places. In this study, we have selected five sections from the
The objective was to determine and monitor seasonal changes during four hydrological seasons: Wet season (September), Wetdry season (December), Dry season (Marc
针对目前网络信息检索效率不高的问题,提出了一种基于关联库的查询扩展方法。此方法通过将文档用向量空间模型表示,然后,抽取文档中的特征语词/概念,再利用关联规则挖掘技术
泰戈尔的戏剧很早就译介到中国,但对它的研究始终处于初级阶段,戏剧叙事学的研究则为进一步研究泰戈尔戏剧提供了一个新的切入点.<大自然的报复>是泰戈尔第一部成功的剧作,一
From 7 to 12 January 2015, there was a rare persistent severe pollution event in Ningbo. Based on the data from routine weather observation, automatic weather s