backmixing造句

• They also impede backmixing of sand .
  同时也可防止砂子的返混。
• By integrating the backmixing theory of reaction engineering with predictive model of river pollution in environmental quality assessment study , the predictively longitudinal dispersion model of river quality was got and analyzed
  摘要将反应工程学的返混理论与环境质量评价学的河水污染预测模型结合，得出了河流水质预测纵向扩散模型，并给出了解析解。