本文从理论上系统地阐述了高压脉冲电场杀菌装置控制系统的研制，设计出低成本矩形脉冲电源，并且能宽范围调节电场参数。
The development of sterilization device control (system) for HPEF is stated by the Numbers in theory. A cheap square pulsed supply is worked out and its (parameters) can be adjusted in a wide range.
低速风洞实验要求对实验段的风速有严格的控制，要求风速调节范围宽，精度指标高，调节速度快。
Low speed wind tunnel experiment requires strict of the wind speed, which requires a wild range of wind speed, high precision, and quick adjustment.
具有电压调节范围宽，电路简单，输出稳定，可靠性强，人机交互接口优良，应用范围广泛等特点。
And it has the features of wide range regulation of voltage, simple circuit, output stability, reliability, excellent interactive interface, being widely used and so on.
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