1) Hanging arch length
悬顶距
2) hanging arch
悬顶
1.
Cause of hanging arch formation for cutting and kerve and its treatment method
切割拉槽悬顶形成原因及处理方法
3) zenith distance
顶距
1.
just by pressing a button without the sea horizon to turn to,we should know clearly the relationship between the accuracy of zenith distance observed and the accuracy of a position fixed,the causes of the errors of zenith distance observed,what accuracy of zenith distance observed could be obtained and what accuracy standard should be used.
要在无水天线测天时一按按钮就可定出较精确的船位经纬度,必须弄清天体顶距测量精度对定位精度的影响,弄清顶距测量误差产生的原因,可达到的精度及选用适当的精度标准。
2.
The paper expounds the principle and the method of measuring zenith distance for celestial positioning based on the direction of gravitational force line.
论述了在海上进行天文定位时以重力线作基准直接测定天体顶距的原理和方法。
4) apex distance
顶距
1.
The pipe driving construction method characteristics,pipe material choice,pipe driving force calculation and apex distance determination,working pit and receiving pit selection and size determination were analyzed.
对顶管施工方法工艺的特点、管材选择、顶力计算和顶距确定、工作坑和接收坑选用及尺寸确定等方面进行了分析,并提出了顶管法施工应注意的一些事项,以推广顶管技术的应用。
5) hanging arch system
悬顶系统
1.
Study on energy store and release of mining field large area hanging arch system;
采场大面积悬顶系统贮能及释放研究
6) suspend-top
爆破悬顶
补充资料：“麻雀”远距空空导弹
此型导弹是世界上第一种批量生产能超视距迎头攻击的空对空导弹，美国较早开始研制的一种中程导弹，主要用于攻击敌方的轰炸机、战斗机和巡航导弹。１９５５年开始服役，从１９４６年至今已发展了十几种型号，如“麻雀ⅰ”、“麻雀ⅱ”、“麻雀ⅲ”、“麻雀ⅲａ”、“麻雀ⅲｂ”、“麻雀ａｉｍ－７ｍ”等.
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条