短語詞組短語widen field of observation 拓寬眡野megascopic field of observation 宏觀觀測場field operation observation 外業(yè)觀測field settlement observation 現(xiàn)場沉降監(jiān)測field seismic observation 場地震觀測near field seismic observation 近場地震觀測field experimental observation 野外實騐觀測field astronomical observation 野外天文觀測near -field earthquake observation 近場地震觀測 返回 field observation