“roof beam”的概念、定义、翻译、参考文献-科学参考

单词	roof beam
释义	roof beam [`rüf ´bēm] ^{BUILDING CONSTRUCTION} A load-bearing member in the roof structure.
随便看	light transmission light valve light water light waterline light-water reactor light watt lightweight aggregate lightweight concrete light well light-year Ligiidae lignaloe oil ligneous lignify lignin ligninase lignin plastic lignite lignite A lignite B lignite wax lignitious coal lignocaine lignocellulose lignosa

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。