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WebIEEE: The world's largest technical professional organization for the advanceqment of technology. 换句话说是世界上最大的电子电器工程师协会。. IEEE trans是这个学会出版的会刊。. A类,B类一般是说CCF(中国计算机学会)推荐的高水平期刊会议。. 一区和二区一般指中科院的期刊分区 ... WebSep 20, 2024 · 试剂级别:化学纯 (最低级)【一般试剂,就像生产中的工业级相当】、分析纯【一般的实验室分析,可作为低要求的对照】、光谱纯【光谱分析所用试剂】,色谱纯 … WebApr 20, 2024 · Biotechnology is an exciting and fascinating field that, as its name implies, combines the study of biology with applications in the field of technology. Students who … small poor home