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表层介质 | |||
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表层介质; 表面材料 | |||
面层材料; 表层材料 |
surface materials : 24 phrases in 12 subjects |
Animal husbandry | 1 |
Architecture | 1 |
Automobiles | 1 |
Aviation | 2 |
Electronics | 2 |
Engineering geology | 1 |
Metallurgy | 1 |
Nautical | 1 |
Refrigeration | 1 |
Space | 2 |
Technology | 9 |
Water resources | 2 |