“principal half-space”的概念、定义、翻译、参考文献-科学参考

单词	principal half-space
释义	principal half-space 主半空间
随便看	nationalities affairs nationality nationality carpet nationality products enterprises nationality township(s) nationalization of enterprises nationalization of insurance nationalization of land national keyboard national language character set national market national measurement system national medicine national network national number national output National park national patent National Patent Commission (NPC) (美国) national preferences national project national psychology national quality product national regulation national requirements

科学参考收录了1248194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。