“sand”的概念、定义、翻译、参考文献-科学参考

单词	sand
释义	sand Encyclopedia 工学[矿物材料]释 sand砂一种粒径在0.05～2毫米的碎屑。农学砂粒释 sand砂粒土壤物质中粒组直径在50微米（美国制）或20微米（国际制）～2毫米的成分。是土壤物质的最大粒组。理学﹝土力学基本概念﹞释 sand砂土粒径大于2毫米的颗粒含量不超过全重50%，且粒径大于0.075毫米的颗粒含量超过全重50%的无黏性土。
随便看	special-media map special medicine for military forces Special message of ChiangKai-shek to Chinese press special metric special mining method special mission special mission aircraft Special mission of Dong Biwu to the UN General Assembly special mortar special municipal organic law special net theory special offering Special Olympics Special Olympic World Games special operation special operator special optical fiber special orbital integral special ordering special ordinance special orthogonal group special orthogonal matrix special orthogonal polynomial special orthogonal transformation special packaging

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。