“pin timbering”的概念、定义、翻译、参考文献-科学参考

单词	pin timbering
释义	pin timbering [`pin ´tim·bǝ·riŋ] ^{MINING ENGINEERING} A method of mine roof support in which bolts are driven up into strong material, thus supporting lower weak layers.
随便看	smooth muscle smooth muscle fiber smoothness conditions smooth phase smooth sea smothered bottom smother kiln smudge smudge oil smudging smut smut fungus S/N Sn snag snagging snail snail fever snake snake hole snaking snaking stream SNAP snap snap-action switch

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。