bispheric dark-field condenser
dark field paraboloid condenser
dark field and bright field incident light microscope
dark field illumination
dark field illumination method
dark field microscopy
暗视声显微镜检查
暗视场显微术
暗视野显微术
暗场显微法
dark field photomicrography
dark field reflection microscope
Dark Field Vertical Illumination
dark-field color immersion method