The circulationofmaterials is pushed by a big flow and low-lift axial flow pump.
料浆的循环靠大流量、低扬程的轴流泵推动。
2
Studies on the role of coastal microbenthos in energy flow and circulationofmaterials in marine ecosystems;
对沿海小型底栖生物在海洋生态系统能流和物质循环中的作用研究。
3
The mechanism of artificial soil represents the movement process of material balance, material conversion, material flow and circulationofmaterials in the human society and nature.