“standard sieve”的概念、定义、翻译、参考文献-科学参考

单词	standard sieve
释义	standard sieve Encyclopedia 工学矿石粒度释 standard sieve标准筛筛孔尺寸有一定比例、筛孔大小和筛丝直径均按照标准制造的一组筛子。是筛分分析的工具。
随便看	closed region closed reserve system closed resonator closed Riemann surface closed ring closed scheme closed season closed semicircle closed semigroup closed semisphere closed sentential formula closed sequence closed set closed set basis closed-shelf book selling closed shell closed shell ion closed-shell ion closed shell molecule closed simplex closed solid sphere closed solution closed space closed sphere closed star

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。