“邮政用品用具”的概念、定义、翻译、参考文献-科学参考

单词	邮政用品用具
释义	邮政用品用具 Encyclopedia 工学邮政用品用具释 postal appliances邮政用品用具进入邮政通信网中使用的具有国家标准、行业标准或其他影响邮政通信全网运行效能的各类信封、明信片、专用包装用品、邮筒（邮箱）、日戳（见邮戳）、过戳机、邮资机、条码生成器等。
随便看	proportion proportional proportional allocation proportional compasses proportional constant proportional control proportional counter proportional counting proportional counting tube proportional dividers proportional division proportional expression proportional guidance method proportional hazard model proportional hazard regression model proportional hazards model proportional-integral-derivative control proportional integral derivative controller proportional-integral-derivative controller proportional integral derivative regulator proportional integral derivative regulatory systems proportional integral regulator proportional-integral regulatory systems proportional intensification proportional-intergral-dervative control

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。