“pencil cave”的概念、定义、翻译、参考文献-科学参考

单词	pencil cave
释义	pencil cave [`pen·sǝl ´kāv] ^ENGINEERING A driller's term for hard, closely jointed shale that caves into a well in pencil-shaped fragments.
随便看	dipstick dipstick microscopy dip stream dip-strike symbol DIP switch Diptera Dipteriformes Dipterocarpaceae dipterous dipulse dipyramid dipyre Dirac charge Dirac covariants Dirac delta function Dirac electron theory Dirac equation Dirac fields Dirac gamma algebra Dirac h Dirac hole theory Dirac matrix Dirac moment Dirac monopole Dirac particle

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。