dark field and bright field incident light microscope
dark field illumination method
dark field microscopy
暗视场显微术
暗视野显微术
暗场显微法
暗视声显微镜检查
dark field photomicrography
a system of a major field of specialization plus a minor field
added electric field and magnetic field
adjustment between wind field and pressure field
coupling for seepage field and stress field
coupling seepage field and stress field
deep-basin gas field beneath Daqing oil field
field in field technique
flow field and concentration field of alloying element
Irrigated field and dry field ecological type
mirror condenser reflecting condenser
a dark horse bobbing up