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| primary study (Andy) | |||
| original study | |||
| primary research | |||
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| upstream research (Many of these inventions were based on what we might call upstream research, not the implementation of research that was largely done elsewhere. A.Rezvov) | |||
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первичное исследование : 8 短语, 5 学科 |
| 临床试验 | 2 |
| 医疗的 | 1 |
| 航天 | 1 |
| 药店 | 2 |
| 营销 | 2 |