1. Introduction　　In the early 1970s， however， some misgivings about the CA began to arise. Moreover， many of the predicti......

目的：：分析研究阳春砂基因序列特征，建立基于DNA分子的快速甄别阳春砂的荧光定量PCR技术。方法：收集阳春砂及同科其他样品，经专家鉴别后......

采用高倍光学显微镜和焦平面探测器测试系统对焦平面探测器相连缺陷元进行了测试分析,研究了焦平面探测器相连缺陷元的成因。研究......

To identify the main idea of each paragraph and understand the structure of the text by skimming;To get to know some bri......

目的对鼻舒适片的鉴别项进行修订研究。方法采用薄层鉴别法鉴别处方中扑尔敏、野菊花、防风。结果扑尔敏、野菊花、防风薄层鉴别呈......

电极的设计效率直接影响了EDM的使用效率。基于二维图形构建三维电极模型是工程实践中常用的方法之一,然而在二维图中逐个选取和偏......

To explore biodegradation of 2-naphthol and its metabolites accumulated in wastewater treatment, a series of bio-degrada......