查询词典 ethanol
- 与 ethanol 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Analysis of labelled ethanol desorbed at different temperatures indicated that the adsorbed ethanol did not take part in the coke formation.
吸附标记乙醇的升温脱附产物的分析结果表明,吸附态乙醇并不结焦。
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Results showed that terpene-catechol resin could be synthesized directly with the proposed method.The synthesized terpene-catechol resin could be separated from terpene resin and catechol on neutral alumina column with petroleum,absolute ethanol and 5% NaOH-ethanol solution as eluates.
采用柱层析法分离萜烯树脂和萜烯-邻苯二酚树脂,分别采用中性氧化铝和强碱性阴离子交换树脂作固定相,汽油、乙醇、NaOH-乙醇溶液作洗脱剂对萜烯树脂和萜烯-邻苯二酚树脂进行分离提纯。
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The eluents were water, 10%, 20 %, 30 % and 50 % ethanol respectively and they flowed through the macroporous resin one by one with five times of the column volume. The obtained eluent of 50 % ethanol was evaporated and the content of total flavonoids was 76 % measured by HPLC.
结果 选择AB-8大孔树脂;最佳纯化工艺为上样液总黄酮质量浓度 60 mg·L-1,pH 5.0,温度 25 ℃;最佳洗脱方式是用5倍柱体积的水及体积分数分别为10 %、20 %、30 %的乙醇依次洗脱,弃去洗脱液后再用5倍柱体积的体积分数为50 %的乙醇洗脱;HPLC法测定总黄酮的含量为76 %。
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Results Total astragalosides were mainly in 40%-80% ethanol parts eluted by different concentration ethanol.
结果60%乙醇提取树脂吸附后用不同体积分数乙醇洗脱,黄芪总皂苷主要集中在40%~80%乙醇部位。
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Comparision on antibacterial activity of ethanol extracts of clove bud and clove fruit in vitro;2. The results showed that ethanol extracts from C.
法测定了油茶叶乙醇提取物的抗氧化活性,并与芦丁、二丁基羟基甲苯进行了比较,在波长517nm、反应时间40min的条件下测定了DPPH。
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The results showed that the proportion of water and ethanol, the guar gum, the stearic acid all had a greater influence on the property of synthetic film. The optimum filming conditions were: soy protein isolate 5.0%, the proportion of water and ethanol 80:20, guar gum 0.25%, stearic acid 0.3%.
研究结果表明:水与乙醇的体积比、瓜尔豆胶含量、硬脂酸含量对复合膜的性能有较大影响,制备大豆蛋白复合膜技术条件为,大豆分离蛋白浓度为5.0%,水与乙醇体积比为80:20,瓜尔豆胶加量为0.25%,硬脂酸加量为0.3%。
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In order to research and evaluate the safety of food packaging of plasticizer Di-2-ethylhexyl phthalatein PVC film, the migration rate of DEHP from PVC film into water food simulants (distilled water, 65% aqueous ethanol, 20% aqueous ethanol, 4% aqueous acetic acid) was studied at 17, 30, 40, 50 and 60℃ by Gas Chromatography.
为了研究评判PVC膜中增塑剂邻苯二甲酸二异辛酯在食品包装中的安全性,采用气相色谱仪测试了几种水性溶剂(蒸馏水、65%乙醇、20%乙醇、4%乙酸)在不同温度(17℃、30℃、40℃、50℃、60℃)下对PVC膜中增塑剂DEHP的溶出率。
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The results show that DEHP can migrate into all water food simulants from PVC film and the migration rate was the highest in 65% aqueous ethanol with the range 0.85%~6.31% and a big increasing amplitude when contacting temperature over 30℃, the rate was lower in 20% aqueous ethanol and distilled water with the range 0.19%~0.45% and 0.19%~0.37%, respectively; and the rate was the lowest in 4% aqueous acetic acid with the picked out rate 17% and the value <0.4%.
研究结果表明,PVC膜中DEHP在几种水性溶剂中均有溶出,在65%乙醇中溶出率最大,范围为0.85%~6.31%,当浸泡温度超出30℃后,溶出率增幅较大;在20%乙醇和蒸馏水中的溶出率较小,范围为0.19%~0.45%和0.19%~0.37%;4%乙酸对DEHP的溶出作用最小,70个样品中,检出率为17%,检出溶出率。4%。
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The components of algycone were benzyl alcohol, trans-linalool oxide, linalool, phenyl ethanol, methyl salicylate and geraniol in fresh tea leaves while those in green tea was five kinds as those of fresh tea leaves excepted benzyl alcohol and those in black tea were only phenyl ethanol and trans-linalool oxide.
糖苷类香气前体检测结果表明,鲜叶中的香气前体苷元有6种,分别为苯甲醇、反式-芳樟醇氧化物、芳樟醇、苯乙醇、水杨酸甲酯和香叶醇;绿茶中有5种,苯甲醇未检测出;而红茶中只检测出了反式-芳樟醇氧化物和苯乙醇两种。
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In his State of the Union address in January, Mr. Bush backed financing for "cutting-edge methods of producing ethanol, not just from corn but wood chips and stalks or switch grass" with the goal of making ethanol competitive in six years.
在一月的国情咨文致辞中,布什先生表示支持将资金投入到&尖端的乙醇制造工艺中去,不仅要用玉米来制造,还要用木屑、茎干或柳枝稷来制造&,以期在6年之内使乙醇具有竞争力。
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- 推荐网络例句
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Now she was hungry and angry.She began to smoulder.
现在她又饿又气,她开始流露难以抑制的怒火。
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You have placed our iniquities before You, Our secret sins in the light of Your presence.
诗90:8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。
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Because of their partly crystalline structure polyamides need a relatively high processing
我们的方针是,既要满足客户的需求,并且也不使用对环境有损害的重