“pay dirt”的概念、定义、翻译、参考文献-科学参考

单词	pay dirt
释义	pay dirt [`pā ´dǝrt] ^{MINING ENGINEERING} Profitable mineral-rich earth or ore.
随便看	pitching axis pitching fold pitching moment pitch line pitch mining pitch opal pitch ore pitchover pitch-row pitchstone pit furnace pith pi theorem pith knot pith ray pit limits pitman pitman arm pitometer pitometer log pitot pressure pitot tube pitot-tube anemometer pitot-venturi flow element pit-run gravel

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。