phosphoric anhydride 中文意思是什麼
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With phosphato - tungstic acid as catalyst and phosphoric acid as dehydrant, n - phenylmaleimide was prepared from aniline and maleic anhydride by two - step method. the yield was 88. 7 % and the purity was 98. 2 %
以順酐和苯胺為原料，磷鎢酸作催化劑，磷酸作脫水劑，採用兩步法制得n -苯基馬來酰亞胺，得到最佳反應工藝條件，產品收率為88 . 7 % ，純度為98 . 2 % （質量分數） 。 -
Fertilizers. blast furnace slag. extraction of phosphoric anhydride soluble in citric acid reagent
肥料.高爐爐渣.從檸檬酸試劑中萃取溶解的磷酸酐 -
Natural mineral phosphates. dissolving of the total phosphoric anhydride
天然礦物磷酸鹽.磷酸酐的全部溶解 -
Natural mineral phosphates and fertilizers. spectrophotometric determination of phosphoric anhydride molybdenum blue method
天然礦物磷酸鹽和肥料.磷酸酐含量的分光光度法測定 -
Fertilizers, ground natural mineral phosphates. extraction of phosphoric anhydride soluble in formic acid reagent
肥料.粉狀天然礦物磷酸鹽，溶於甲酸試劑的磷酸酐的提取 -
Natural mineral phosphates and fertilizers. spectrophotometric determination of phosphoric anhydride vanado - molybdenum method
天然礦物磷酸鹽和肥料.磷酸酐含量的分光光度法測定 -
Products used in agriculture. natural mineral phosphates and fertilizers. quantity determination of different forms of phosphoric anhydride. general presentation
農用產品.天然礦物磷酸鹽和肥料.不同形式磷酸酐的定量測定
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