“古代起重机械”的概念、定义、翻译、参考文献-科学参考

单词	古代起重机械
释义	古代起重机械 Encyclopedia 工学﹝其他古代机械﹞释 ancient lifting machine古代起重机械考古记录显示，最迟在公元前515年，提升夹具和铁制的吊楔就开始出现在了古希腊人石块结构的神殿里。
随便看	covalently regulatory enzyme covalent modification of regulation covalent network covalent organic framework polymer covalent organic polymer covalent radius covariance covariance analysis covariance distribution covariance function covariance functional covariance matrix covariance operator covariance spectrum covariance stationary process covariance structure analysis covariance window covariant covariant component covariant constant field covariant continuation covariant curvature tensor covariant density functional theory covariant derivative covariant derivative tensor

科学参考收录了854744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。