超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
非球面校正透镜
aspherical correcting lens
平面非球面透射校正镜
plano-aspheric transmitting corrector
凹非球面
concave aspherical surface
八角形离轴非球面
octagonal off-axis aspheric surface
大非球面度镜面
deep off-axis aspherical mirror
大口径非球面
Large-aperture aspheric surface
Large aspheric surfaces
Large aspheric surface
large aspheric mirror
大数值孔径小非球面
small aspherical surface with large NA
大型光学非球面
large optical aspheric surface
地球非球形摄动
nonspherical perturbation
earth oblateness
地球非球形引力摄动
Earth nonspherical gravitation perturbation