“catalyst grading”的概念、定义、翻译、参考文献-科学参考

单词	catalyst grading
释义	catalyst grading Encyclopedia 工学固定床加氢释 catalyst grading催化剂级配在一定原料性质和工艺条件下，将不同功能的加氢催化剂按一定的比例依次装填，以满足产品性质和运转周期要求的技术。是固定床加氢工艺的核心技术之一。
随便看	pillow stuffing pillow towel pillow with louts pattern and black flowers painted in white pills pilocarpine pilose antler pilot pilotage pilot and engineer training system of aircraft materiel pilot atlas pilot bit pilot certificate training pilot demonstration area of socialism with Chinese characteristics piloted pilot experiment pilot-heading excavating method pilotherm pilot hole pilothouse pilot induced oscillation flight test piloting piloting technician pilotless pilot medical selection pilot operation procedure

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。