词汇	formative appraisal
释义	formative appraisal 形成性评价
随便看	underdeveioping area underdevelop underdeveloped under developed under-developed underdetermined under-determined underdetermined blind mixing model recovery Underdetermined blind separation underdetermined blind source separation underdetermined blind sources separation Underdetermined BSS underdetermined equation group underdetermined mixing underdetermined mixture under-determined mixture underdetermined problem underdetermined source separation underdetermined system under determined system under-determined system underdeveloped agricultural main producing area underdeveloped area under developed area under-developed area