机译:Occurrence and Removal of Enterohemorrhagic Escherichia coli O157:H7 in Four Full-scale Sewage Treatment Systems in Beijing, ChinaAU Zhang Zhennan Zheng Shaokui Xu Yahui Li Juan Liu Xinchun (xcliu@ucas.ac.cn)
机译:Enzymatic reaction of the immobilized enzyme on porous silicon studied by matrix-assisted laser desorption/ionization-time of flight-mass spectrometry