To select model of photomultiplier and design preamplification.
光电倍增管的选型和前置放大电路的设计。
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A range automatic transfer is designed for the preamplification system with resistance feedback.
前置放大电路设计了量程自动切换的电阻反馈式两级放大。
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Objective To study the effect of modified improved primer extension preamplification (IPEP) on STR analysis of trace DNA.
目的探讨改良扩增前引物延伸(ipep)法对痕量DNA样本s TR检测分型的效果。
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