目的探讨非膨胀浓度的全氟丙烷对复杂性视网膜脱离的疗效。

Objective To evaluate the clinic value of non expanded perfluoropropane gas for management of complicated retinal detachment.

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非线性、高复杂性、时变、“膨胀”和“收缩”现象以及非最小相位等特性致使SG水位控制成为一直以来的难题。

There are factors such as nonlinearity, high complexity, time varying, swell-and-shrink phenomena and non-minimum phase dynamics which make water level control problem of SG very challenging.

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