Results show that the quasi biennial (QB) oscillation is the most unstable mode of the linear coupled air sea system and only the QB mode displays ENSO-like horizontal structure.

结果表明：准两年振荡是线性海气耦合系统中的最不稳定模态，且只有该模态类似于ENSO水平结构。

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Based on the prerequisite of system resonance, this thesis obtains the sufficient condition of system stability using quasi-linear theory and brings forward the criterions of the system stability.

在系统谐振的必要条件基础上，本文运用准线性理论得到了系统谐振稳定的充分条件，并提出了评价系统稳定性好坏的性能指标。

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The quasi-static input-output linear regression equation of the measuring system is established, and the testing results of input-output curve linearity and sluggishness are given.

建立了该检测系统的准静态输入输出线性回归方程；测试了系统的输入输出特性曲线、线性度和迟滞性；

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