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 aspheric surfaces
Large aspheric surface
large aspheric mirror
Large-aperture aspheric surface
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
earth oblateness
nonspherical perturbation
地球非球形引力摄动
Earth nonspherical gravitation perturbation