单词 | shell pump |
释义 | shell pump [`shel ´pǝmp] MECHANICAL ENGINEERING A simple pump for removing wet sand or mud; consists of a hollow cylinder with a ball or clack valve at the bottom. |
随便看 |
|
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。