目的:对非洛地平,氨氯地平及硝苯地平控释片降压效果进行对比分析.方法:选取我院2017年3月到2018年3月收治的180例高血压患者,按照随机原则分为A,B和C三组,每组60例患者,A组患者采取非洛地平进行治疗,B组患者采取氨氯地平治疗,C组患者采取硝苯地平控释片进行治疗,经过为期1月的治疗后对三组患者的降压效果进行对...
speed of response variable amplifier (26) in the input stage of an amplifier circuit (10) for reducing the interference of the frequency of channel offset.where test sequences are introduced into the amplifier circuit to be used to measure the maximum permitted levels for entry to the amplifier...