direct flame
| atomic absorption method
| direct flame | |
| avia. | 直接火焰 |
| atomic absorption method | |
| tech. | 原子吸光法 |
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| 直接火焰 | |||
| 直接焰 | |||
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direct flame : 8 phrases in 5 subjects |
| Animal husbandry | 1 |
| Chemistry | 1 |
| Construction | 1 |
| Metallurgy | 1 |
| Technology | 4 |