“round trip”的概念、定义、翻译、参考文献-科学参考

单词	round trip
释义	round trip [`rau̇nd ¦trip] ^ENGINEERING The combined operations of entering and leaving a hole during drilling operations.
随便看	needle nozzle needle ore needlepoint lace needle scratch needle test point needle tubing needle valve needle weir needling need-to-know neem oil neencephalon negation negative negative acceleration negative acknowledgement negative afterimage negative angle negative area negative booster negative catalysis negative charge negative conductor negative correlation negative crystal

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。