草酸稀土 的英文怎麼說
中文拼音 [cǎosuānxītǔ]
草酸稀土
英文
rare earth oxalate-
The humankind is troubled seriously by a series of environmental problems, such as air pollution, ozonosphere destruction, glasshouse effect, acid rain, water pollution, land pollution and soil erosion and so on. all of these will stop our economy developing
大氣污染、臭氧層破壞、溫室效應、酸雨頻繁、水污染、土地污染、水土流失、草原退化、森林急劇減少、珍稀動植物滅絕、沙漠急劇擴大等一系列環境問題嚴重困擾著人類，各種公害接二連三地侵襲人類，再這樣下去，經濟將變成無源之水、無本之木。Abstract : a method for preparation of rare earth oxides with high specific surface area was described. hydrazine - containing rare earth oxalates as the precursors were synthesized by using rare earth oxalates and hydrazine. the specific surface area of rare earth oxides made by the method described in this paper is higher than that by the usual method
文摘:利用肼（或肼鹽）易分解同時釋放大量的熱和氣體這一特點，將肼（或肼鹽）添加到草酸稀土中去，熱分解含肼稀土草酸鹽可制得比表面積較常法制備的大得多的稀土氧化物。Approximately 20 million ha are presently abandoned to savanna on predominantly poor nutrient status acid soils
到目前為止，約有2000萬公頃已棄荒成為熱帶稀樹草原，土壤酸性，養分極少。Synthesis of dibutyl oxalate catalyzed by rare earth solid catalyst
稀土固體超強酸催化合成草酸二丁酯Chemical analysis methods for mixed rare earth oxide of ion - absorpted type re ore - determination of total rare earth contents - oxalate gravimetric method
離子型稀土礦混合稀土氧化物化學分析方法草酸鹽重量法測定稀土總量Determination of total rare earth contents - rare earth oxalate gravimetric method
草酸鹽重量法測定稀土總量Aluminium and aluminium alloys - determination of total rare earth contents - rare earth oxalate gravimetric method
鋁及鋁合金化學分析方法草酸鹽重量法測定稀土總量Rare earth metals and their compounds. determination of total rare earth contents. rare earth oxalate gravimetric method
稀土金屬及其化合物化學分析方法草酸鹽重量法測定稀土總量分享友人