After the series of world map had used for Antarctic expedition of China, the series of world map was used by navigation map of the first round world ocean expedition of China.
继新编《系列世界地图》(南半球版)被我国南极科考采用之后,采用新编《系列世界地图》(北半球版)编制出“中国首次环球大洋科考航线图”,直接为我国首次环球大洋科考提供了服务。
By choosing particular course and data processing, this method is suitable for flying test on the far zone of instrument landing system, and can be used for making a statistical analysis to the flight test result.
从理论上分析表明,通过选择特殊的检验航线及数据处理方式,此方法可适合于对仪表着陆系统远区场进行检验,且可对检验结果进行统计分析。
Based on 2-D mathematical model calculation and from the point of satisfying safe navigation of waterway,it is demonstrated that: According to the original design scheme,the navigable clear width is not enough and there is a lack of space between up-bound shipping line and the main pier,which influences severely upbound navigation.
通过对茜草大桥二维数学模型计算,从满足航道安全通航要求的角度出发论证:原设计方案通航净宽不够;主墩距船舶上行航线太近,严重影响船舶上行。
Research on Economy of Airline-network and Application;
航线网络的经济性研究及其应用
The aviation network which is comprised of nodes(airports) and lines(airlines) represents the spatial accessibility of the cities,and intuitionisticly reflects the hierarchical structure and distribution pattern o.
由结点(航空港)和连接线(航线)所组成的航空网络代表了城市的空间可达性,直观地反映出国家城市体系的等级结构与分布格局。
This article introduced the influence to the ship speed by the current of circularity and loxodrome,the wind en the route of Salvador to the Sunda Strait,as well as the factor of draft difference and critter on bottom reducing the ship speed is given.
介绍由萨尔瓦多至巽他海峡大圆航线与恒向线水流、风对船速的影响,以及船舶吃水差、船底水生物对船速的影响,提出航线选择应考虑的因素。
According to the existing situation of rolling transport, the natural route condition, the corresponding establishment of the wharf as well as the predicted vehicle & passenger volume on the route between Yantai and Dalian, this paper works out the number of vehicles & passengers loaded on the ro ro ship regarding to its characteristics.
根据烟连线滚装运输的现状、航线自然条件、码头配套设施以及车客流量的预测结果 ,结合滚装船的结构特征 ,确定出船舶的载车载客数 ,估算出长、宽及型深等主尺度技术参数 ,设计了十几种船型方案 ,在经济效益分析的基础上优选出三种合适的船型 ,并最终作出了盈亏平衡分析和敏感性分析 ,结果证明 ,船型方案可行可靠 。
A Study on Container Allocating in Shipping Routes for Liner Company;
集装箱班轮公司航线配箱问题研究