“roof stringer”的概念、定义、翻译、参考文献-科学参考

单词	roof stringer
释义	roof stringer [`rüf ´striŋ·ǝr] ^{MINING ENGINEERING} A lagging bar running parallel with the working place above the header in a weak or scaly top in narrow rooms or entries which have short life.
随便看	Bethyloidea betrunked river Betterton-Kroll process Betti group Betti number Betti reciprocal theorem Betti's method Betts' process Betula Betulaceae betula oil betulinic acid between decks betwixt mountains Betz cell Betz momentum theory beudantite BeV bevel beveled closer bevel gear beveling Beverage antenna beyerite beyond-the-horizon communication

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。