卫生标准 : 45 phrases in 20 subjects |
Agriculture | 2 |
Animal husbandry | 3 |
Aviation | 1 |
China | 1 |
Consulting | 1 |
Ecology | 4 |
Environment | 1 |
Food industry | 1 |
Food service and catering | 1 |
General | 1 |
Hydroelectric power stations | 2 |
Metallurgy | 1 |
Name of organization | 2 |
Nursing | 2 |
Oil / petroleum | 1 |
Pest control | 1 |
Space | 2 |
Technology | 15 |
United Nations | 2 |
Water resources | 1 |