“sighting instrument”的概念、定义、翻译、参考文献-科学参考

单词	sighting instrument
释义	sighting instrument [`sīd·iŋ ´in·strǝ·mǝnt] ^ORDNANCE A device or an instrument designed to aid in the pointing of a weapon.
随便看	center of twist center of volume center plug center punch center square center staff center tap center wheel centesis centi- centiare centibar centigrade heat unit centigrade temperature scale centigram centihg centiliter centimeter centimeter-candle centimeter-gram-second system centimeter of mercury centimetric waves centimorgan centipede centipoise

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。