短語(yǔ)詞組短語(yǔ)material -flow information 物流信息material circular flow 物質(zhì)循環(huán)流動(dòng)material l flow 物質(zhì)流material volumetric flow 躰積流率material for flow 過(guò)流材料minor material -flow 支物流material damage flow 物料流程material plastic flow 材料塑性流動(dòng) 返回 material flow