“expandable sand screen”的概念、定义、翻译、参考文献-科学参考

单词	expandable sand screen
释义	expandable sand screen Encyclopedia 工学机械防砂释 expandable sand screen可膨胀防砂筛管由割缝钢管、防砂筛布和预割缝钢板三部分组成的先进的井下完井工具。
随便看	upper semicontinuous mapping upper semicontinuous partition upper semi-lattice upper semi-modular lattice upper semisphere upper series upper set upper side frequency Upper Silesia Coalfield upper singular exponent upper solution upper solution; supersolution upper-stage upper stage liquid rocket engine upper strong derivative upper subsemilattice upper sum upper surface upper tangent arc upper topological limit upper transit upper triangular group upper triangular matrix upper-trimmed subsequence upper type

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。