“三线四区”的概念、定义、翻译、参考文献-科学参考

单词	三线四区
释义	三线四区 Encyclopedia 农学三线四区释 three lines and four districts三线四区 “三线”包括城市开发边界、永久基本农田红线和生态保护红线。“四区”为“三界四区”的简称，主要指允许建设区、有条件建设区、禁止建设区和限制建设区。
随便看	additive reduction additive relation additive ring additive scheme additives compatibility additive selection additive semigroup additive set-function additive space additive stochastic process additive structure additive subgroup additive/subtractive hybrid manufacturing technology additive synthesis additive system additive system of photographic exposure additive term additive theory additive theory of ideals additive theory of numbers additive theory of prime numbers additive type additive-type fire-retardant polymeric materials additive uniform structure additive valuation

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。