基本解釋[經(jīng)濟(jì)學(xué)]方孔篩詞組短語(yǔ)短語(yǔ)square -mesh sieve -opening sieve 方孔篩square-mesh sieve更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)方孔篩