利用NCAR CCM 3模式模拟了PD O不同位相对华北夏季降水的可能影响，模式模拟结果和诊断分析结果是基本一致的。
Impacts of different PDO phases on the summer precipitation in North China are simulated with NCAR CCM3. Results of simulation are approximately the same to the results of diagnosis.
在引入故障影响因素的情况下，针对液体火箭发动机中常见的典型故障模式进行稳态故障效应仿真和分析，为该发动机的故障检测与诊断工作奠定了基础。
Then the variation of main engine parameters were analysed based on the simulation results. This work laid the foundation for fault detection and diagnoses of this engine.
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