刻画了平面整数格点区域[-1,n]×[-1,n]上的一类长极小零和序列的结构.
群众性舞蹈是根植于广大人民群众中的一种文化现象,它的形成受到了自身与社会两种因素的影响,舞蹈之所以是文化艺术,就在于它与物质文明、精神文明发展紧密结合,又同人类自身
The wide use and abuse of antibiotics could make antimicrobial resistance (AMR) an increasingly serious issue that threatens global health and imposes an enormo
以提升图书馆馆员整体科技素质、服务素质为重点，面向全国图书馆馆员开展的数字图书馆建设与服务的培训是数字图书馆推广工程建设的重要内容。培训工作应该制定完备的培训规划
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In January 2019,the fourth rabies case caused by organ transplantation was noticed in China,with the conditions of one per year for the recent four years.Differ
Plants detect and respond to the proximity of competitors using light signals perceived by photoreceptor proteins.A low ratio of red to far-red radiation (R:FR
Antimicrobial resistance leads to failure of clinical antimicrobial therapy,and has raised urgent global public health concern.Humans can acquire antimicrobial
前言焊接构件的完好性,是通过设计,制造(焊接)、检测(无损检测)一系列工序得到保证的。因此,不仅应对无损检测方法及焊接(头、缝)有足够的知识和经验,而且对于焊接构件的设