“material unit”的概念、定义、翻译、参考文献-科学参考

单词	material unit
释义	material unit [mǝ`tir·ē·ǝl ´yü·nǝt] ^GEOLOGY A stratigraphic unit based on rocks and their fossil content without time implication.
随便看	xi hyperon xi-minus particle xi particle xiphidio cercaria Xiphiidae xiphisternum Xiphodontidae Xiphosura Xiphosurida Xiphydriidae xi-zero particle XOFF XON XOR X organ x-parallax XPS X punch x-radiation x-ray absorption x-ray absorption near-edge structure x-ray analysis x-ray astronomy x-ray background x-ray binary

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。