研究表明，高采样频率和高阶反混叠滤波器有助于提高系统信噪比；
Higher sampling frequencies and higher order anti-aliasing filters help suppress noise.
并采用高集成度的开关电容滤波器，系统的采样频率和反混迭滤波器的截止频率可在一定范围内任意给定。
Using the highly-integrated Switch-Capacitor filter, the sampling rate and the cut-off frequency of the anti-alias filter can be arbitrarily selected within some range.
目的观察碳酸钙混悬液治疗儿童原发性胆汁反流性胃炎的疗效。
AbstractObjectiveTo evaluate the effect of calcium carbonate oral suspension in the treatment of primary bile reflux gastritis in children.
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