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扫描 电子显 微 镜 : 75 phrases in 18 subjects |
Agriculture | 4 |
Automobiles | 1 |
Aviation | 3 |
Cryptography | 1 |
Desert science | 1 |
Earth sciences | 5 |
Electronics | 28 |
General | 1 |
Geology | 7 |
Metallurgy | 6 |
Oil / petroleum | 2 |
Otorhinolaryngology | 1 |
Plastics | 1 |
Polymers | 3 |
Reproductive biology | 2 |
Space | 4 |
Steel production | 1 |
Technology | 4 |