化工工人
Chemical plant workers
trace element
Employees of chemical factory
Chemical industry workers
抗人工干扰
anti-artifical countermeasure
人工干燥
Artificial drying
articulated frame steering tractor
artificial seasoning
人工干燥积材法
Piling lumber for kiln drying
人工工作量模型
artificial work-load model
人工人口系统
artificial population systems
人工制备结构性土
artificial structured soil
人工制备垃圾土
artificial municipal solid waste