bore line meaning in English
炮膛轴线延长线
钻孔轴线
Examples
- Study on compressive joint mechanics characteristic of shaft - boring lining
钻井井壁可缩性接头力学特性研究 - Direction finding ( df ) equipment a vhf radio station which generates a bearing line on the radar display when an aircraft transmits . it facilitates air traffic controllers to identify aircraft operating within his area of jurisdiction
它可在飞机发出通讯讯号时，在雷达屏幕上显示出该飞机的方向线，以协助航空交通管制员确认其所管制范围内之飞机。 - 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。