navigation line中文什么意思

例句与用法

1. In order to finding the best structure of fleets , the nonlinear optimization method is adopted in chapter five , studying distributing ships for certain navigation line
   木沦义汁次将几川十船w选优方刑，通过对单船和船队两利叫讣、汀比状忐1八喉
2. Radar echoes include echoes of lands , islands , all kinds of moving targets , racon , sart and sea , etc . arpa marks consist of fixed range marker , variable range marker , electronic bearing line , guard zone , heading - line , parallel index ( 4 navigation lines ) , vector lines ( or pad ) and past track information of tracked target ships , marks of trial manoeuvres , ect
   雷达回波包括陆地、岛屿回波，各种活动目标的回波，雷康、 sart回波，海杂波等。 arpa符号包括包括固定距标圈、活动距标圈、电子方位线、警戒圈、船首线、 pi线、已录取目标的矢量线以及历史航迹(或pad ) 、试操船符号等。
3. Highway : it is an intersetion of weiwu expressway ( nationhighway ) , pengshui highway , muhuang highway ( bothprovincialhighways ) and pengfeng highway ( town - levelhighway ) . itisalso connected with jiqing , tongsan expressways as wellas the expressway network in three provinces in northeast china through penglai ? dalian ro - ro navigation line . the transportation is quite convenient
   公路? ?国道威乌高速、省道蓬水路牟黄路、县道蓬丰路在此交汇，连接济青高速、同三高速，通过蓬（莱）大（连）滚装航线与东北三省高速公路相接，形成四通八达的公路交通网。