“spiral ramp system”的概念、定义、翻译、参考文献-科学参考

单词	spiral ramp system
释义	spiral ramp system [`spī·rǝl `ramp ´sis·tǝm] ^{MINING ENGINEERING} Development of a mine by driving moderately inclined haulageways from the surface to underground ore horizons.
随便看	bullfrog bull gear bullhorn bulliform bulliform cell bulling bar bullion bull ladle bull nose bull-nose bit bull-nose plane bullous emphysema Bullpup bull's-eye rot bull's-eye squall bull shaker bull wheel bulwark bulwark plating Bulygen number bumblebee bumboat bummer bump Cepheid bump contact

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。