221 物理科学类技术职业 Technical occupations in physical sciences - 快出国
- 2 自然科学和应用科学及相关职业 / Natural and applied sciences and related occupations
- 22 自然科学和应用科学相关的技术职业 / Technical occupations related to natural and applied sciences
- 221 物理科学类技术职业 / Technical occupations in physical sciences
- 2211* 化学技师和技术员 / Chemical technologists and technicians(B)
- 2212* 地质和矿产技师和技术员 / Geological and mineral technologists and technicians(B)