上述条件下,尼泊金乙酯的产率为87.5% ,尼泊金丙酯的产率为89.2 % ,尼泊金丁酯的产率为91 .1 %。
Under this conditions, the yield of ethyl ester, propyl ester and butyl ester respectively is 87.5%, 89.2% and 91.1%.
上述条件下,尼泊金乙酯的产率为85% ,尼泊金丙酯的产率为94 % ,尼泊金丁酯的产率为92 %。
Under this conditions, the yield of ethyl esters was 85%, propyl ester 94% and butyl ester 92%.
通过野外及镜下研究,初步查明了丁家林—太阳坪金矿区所含金矿物为自然金、银金矿及含银自然金。
By studies in field or under microscope, the gold minerals are found to be composed of gold, silver and silver bearing gold in the Dingjialin and Taiyangping gold fields.
通过野外及镜下研究,初步查明了丁家林—太阳坪金矿区所含金矿物为自然金、银金矿及含银自然金。
By studies in the field or under microscope, the gold minerals are found to be composed of gold, silver and silver-bearing gold in the Dingjialin and Taiyangping gold fields.
通过野外及镜下研究,初步查明了丁家林—太阳坪金矿区所含金矿物为自然金、银金矿及含银自然金。
By studies in the field or under microscope, the gold minerals are found to be composed of gold, silver and silver-bearing gold in the Dingjialin and Taiyangping gold fields.
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