主装置 meaning in Chinese

main installation

In the last three years , i have been the project manager for the engineering design of nanjing chemical industrial group co . , ltd . ' s chemical fertilizer project ( 300kt / a ammonia & 520kt / a urea ) , a key project for both the state and jiangsu province ; under my leadership and organization , we have completed the detailed design of more than twenty process and utilities units for the project as well as the detailed engineering design of process , piping , instrumentation and electrical disciplines for the ammonia plant and the urea plant
近三年内担任国家及江苏省重点工程-南化公司30万吨合成氨及52万吨尿素装置工程设计项目经理，组织完成了该工程二十余项工艺及公用工程配套装置的详细设计并组织完成了主装置区-合成氨及尿素装置工艺、管道、自控仪表、电气等专业的详细工程设计。