introduce before造句

• You look very familiar . have we been introduced before
  你看起来很面熟，我们以前互相介绍认识过吗？
• The various design parameters are introduced before moving on to a six-segment airfoil
  各设计参数介绍转学至六部分机翼
• In the end, the paper uses practical data of some company to analyze the several methods introduced before
  最后，借用某电装公司工程实际数据，对本文介绍的几种预测模型进行了计算说明与结果分析。
• The general ideas of environment and the theory of ecosystem were briefly introduced before the definition of ecological environment, which was synchro-configurated and interpreted by fundamental principle of modern ecosystem theory
  简述环境和生态系统理论，界定生态环境为生态系统理论所理解和同构的环境。
• Abstract : the general ideas of environment and the theory of ecosystem were briefly introduced before the definition of ecological environment, which was synchro-configurated and interpreted by fundamental principle of modern ecosystem theory
  文摘:简述环境和生态系统理论，界定生态环境为生态系统理论所理解和同构的环境。