cartoon medicine lab theresaknott microscope medical equipment compound Microscope clip art 显微镜 显微镜剪贴画
This is clipart converted and broken apart that has been released into the public domain because the document says so, and its from NASA, a USA government agency. The publication is called "The Brain in Space:" http://www.nasa.gov/audience/foreducators/topnav/materials/listbytype/The.Brain.in.Space.html 美国国家航空航天局 空间 科学 58294main_The.Brain.in.Space-页面-58-孩子-显微镜
Simple tabletop microscope like found commonly in high school science classes. 科学 显微镜 仪器 AwfMicroscope