短語詞組短語experimental earth observation system 地球觀測實驗系統(tǒng)experimental considerations observation 實驗觀察experimental observation ability 實驗可觀測性method of experimental observation 實驗觀察法;實驗觀察方法experimental observation of 實驗觀測Experimental Observation Method 實驗觀察法non experimental observation 非實驗性觀測值non -experimental observation [統(tǒng)計]非實驗觀測值field experimental observation 野外實驗觀測 返回 experimental observation