mill operator meaning in Chinese

轧钢工
轧制工

Dynamic observation on the effect of noise on the hearing of ball mill operators
球磨机噪声对工人听力影响的动态观察
The department of scientific education at moa organized a workshop in chengdu in order to validate the skill - based training materials for feed mill operators , green house vegetable growers , special household pig farmers and domestic helpers under the chinese green certificate training program
农业部科技教育司在成都举办了中国绿色证书培训方案中四项新技能评审会，这四项技能涉及了饲料加工操作人员家政服务人员温室蔬菜生产人员和规模化养猪生产人员。