“aven”的概念、定义、翻译、参考文献-科学参考

单词	aven
释义	aven [`av·ǝn] ^GEOLOGY See <<pothole>> ^{MINING ENGINEERING} A vertical shaft leading upward from a cave passage, sometimes connecting with passages above.
随便看	leveche levee level level above threshold level bombing level compensator level converter level crosscut level drive leveled element time leveled time leveler level error level fold level indicator leveling leveling action leveling instrument leveling screw level measurement level of burst level off level-off position level of free convection level of nondivergence

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。