“chalk”的概念、定义、翻译、参考文献-科学参考

单词	chalk
释义	chalk Encyclopedia 工学[矿物材料]释 chalk白垩主要由显微粒状石灰质岩石和海生生物（如贝壳、有孔虫等）的遗骸以及颗粒细小（0.01～0.0005毫米）的方解石组成的一种生物化学沉积岩。理学白垩释 chalk白垩白色疏松土状的石灰岩。
随便看	rural electricity consumption management in China rural electric power network rural electric power networks rural electrification rural electronic commerce rural elite rural empty nesters rural endogenous development rural environment rural environmental management rural environmental sanitation management rural environment improvement rural ethic rural fair market rural fair trade rural family rural family assets Rural Family of Suburban Peking Rural Fiction School rural film projection project rural finance rural finance system rural financial market rural financial risk Rural Financial System Reform

科学参考收录了854744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。