北京大学数学科学学院
department of information science
School of Mathematical Sciences
peking university
北京市环境保护监测中心；北京大学数学科学学院
beijing environmental protection monitoring centre
Nikon YS100普通光学显微镜
Nikon YS100 common light microscope
测微显微镜经纬仪
micrometer microscope theodolite
层析扫描声学显微镜
Carboxyl-containing polyaryletherketone
超显微微生物
ultramicroscopic microbe
ultramicroscopic organism
电子显微学
transmission electron microscopy
electron microscopy
TEM