万名工人监管人员数
number of inspector per 10
000 workers
化工工人
Chemical plant workers
trace element
Employees of chemical factory
Chemical industry workers
人工工作量模型
artificial work-load model
人工管理绿地
manually managed green land
man-manipulated green land
人工监控
artificial monitor
manual supervisroy control
Control
manual supervisory
人工人口系统
artificial population systems