“headtree”的概念、定义、翻译、参考文献-科学参考

单词	headtree
释义	headtree [`hed´trē] ^{MINING ENGINEERING} The horizontal timber placed at each side of a rectangular heading to support the headboard.
随便看	SR cylinder oil SRMS SRS SS SS 433 SSB SS Cygni stars SSD SSI ss loran SSM SSP SSR SST S star s-state SSTV SSU St stab stab culture stabilator stability stability augmentation system stability augmentors

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。