chemical unit meaning in Chinese

化学单位
化学单元

Development of the software in chemical unit operations experiment
化工原理实验教学软件的开发
Knowledge of basic chemical unit operations and hazard analysis methodology
有良好的化工生产基本知识和危害分析知识。
Abstract : in view of , in the modification and maintenance of petro - chemical unit , the limited working space and inability of available hoisting equipment to meet hoisting installation requirements , a simple and reliable hoisting tool used is introduced taking account of the construction conditions
文摘:在石油化工装置大型设备的技术改造和检修作业中，针对现场施工空间小、现有吊装设备无法满足施工要求的情况，介绍了因地制宜设置简单可靠的吊装机具，完成吊装作业的方法?门架旋转作业法的成功应用。