Driving electric field at the polar cap boundary
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
dark field and bright field incident light microscope
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
100%polyester micro suede bounding with polar fleece
500 hPa northern polar vortex
anchorage system in polar region
angle between two polar positions
anterior polar cataract