“headboard”的概念、定义、翻译、参考文献-科学参考

单词	headboard
释义	headboard [`hed´bȯrd] ^{MINING ENGINEERING} 1. A wooden wedge placed against the hanging wall, and against which one end of the stull is jammed. 2. A board in the roof of a heading, contacting the earth above and supported by a headtree on each side.
随便看	activated carbon activated cathode activated charcoal activated clay activated coal plough activated complex activated diffusion activated macrophage activated rosin flux activated sintering activated sludge activated-sludge effluent activated-sludge process activating enzyme activating reagent activating receptor activation activation analysis activation cross section activation energy activation record activator activator ribonucleic acid active accommodation active anaphylaxis

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。