调研 diàoyán research

科研 kēyán research

研发 yánfā research and development

研究 yánjiū examining; research; researches; studies; study

研究生 yánjiūshēng postgraduate

研究所 yánjiū suǒ graduate school

研磨 yánmó grind; lapping

研讨会 yántǎo huì seminar

研讯 yánxùn inquest

研制 yánzhì development

钻研 zuānyán delve

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