“炮眼”的概念、定义、翻译、参考文献-科学参考

单词	炮眼
释义	炮眼 Encyclopedia 工学射孔完井释 perforation hole炮眼在射孔完井过程中，由射孔弹燃爆后形成的穿透套管、水泥环直到地层一定深度处的孔眼。
随便看	upper semicontinuous upper semicontinuous decomposition upper semicontinuous equivalence upper semicontinuous function upper semi continuous mapping upper semi-continuous mapping 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

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。