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1 词典释义:
petroleum ether
时间: 2025-08-18 22:31:55

n.石油醚

双语例句
  • Petroleum ether extract content increased.

    石油醚提取物含量有增加。

  • Mainly by tobacco bud extract petroleum ether extract obtained tobacco bud extract.

    烤烟花蕾浸膏主要是通过石油醚浸提烤烟花蕾制得浸膏。

  • This paper studied on oat oil from deshelled oat seeds by petroleum ether extraction.

    本课题以脱壳燕麦为原料,经石油醚提取得到燕麦油。

  • With ethanol and other organic solvents miscible, insoluble in water and petroleum ether.

    能与乙醇等一般有机溶剂混溶,不溶于水和石油醚。

  • From the 35% EtoAc-petroleum ether portion 1-0-hexanoyl-glycerol ester(12) were isolated.

    从35%乙酸乙酯—石油醚部分分离得到了十六碳酸甘油酯(12)。

  • It is soluble in such organic solvents as acetone, ethylether or petroleum ether instead of water.

    易溶于丙酮、 或石油醚等有机溶剂,不溶于水。

  • Petroleum Ether that is defined is the suitable solvent according to the choice solvent experiment.

    通过对提取溶剂的选择实验得出了提取茄尼醇的最佳溶剂(石油醚)。

  • The yield of petroleum ether extractives from the crowns of C. lanceolata was 5 4% of its dry weight.

    杉木绿冠的石油醚提取物得率,为其绝干重量的5.4%。

  • It was found that both n-hexane and petroleum ether were good solvent for ultrasonic-assisted process.

    结果表明,正己烷和石油醚作提取溶剂效果较好。

  • Degreasing treatment with petroleum ether is a common step in extracting processing of plant flavonoids.

    石油醚除脂处理是目前植物黄酮类物质提取中常用的处理环节。

  • TheVirginia Division of petroleum ether extract is mainly extracted by Virginia tobacco extract obtained.

    本司弗吉尼亚浸膏主要是通过石油醚浸提弗吉尼亚烟叶制得浸膏。

  • The content of carotenoid and petroleum ether extract reduced at three months of aging and then increased.

    类胡萝卜素和石油醚提取物含量在陈化三个月时降低,之后上升。

  • Another part is about the separating from the Petroleum ether fraction of Selaginella uncinata (Desv. ) Spring.

    另一部分是对瑶药翠云草石油醚萃取部位化学成分进行分离。

  • The Divisionof Zimbabwe is mainly through petroleum ether extract of Zimbabwean tobacco extract obtained extract.

    本司津巴布韦浸膏主要是通过石油醚浸提津巴布韦烟叶制得浸膏。

  • Conclusion: the extract of petroleum ether of Rhizoma Amorphophalli is possibly one of antineoplastic parts of the plant.

    结论:蛇六谷石油醚萃取物可能是该药抗肿瘤的有效部位之一。

  • Overview: the Division plum extract mainly produced in Yunnan plum child, obtained through the extraction of petroleum ether extract.

    概述:本司梅子浸膏主要采用云南产的酸梅子,通过石油醚浸提制得浸膏。

  • Methods:Hydrogenated terphenyls in the air was collected with petroleum ether or chorcoal turb and then determined by spectrophotometer.

    目的:建立作业场所空气中氢化三联苯的采样和测定方法。

  • Overview: The Division Lanti Vanilla extract raisins produced mainly in Xinjiang, as the raw material obtained by petroleum ether extraction.

    概述:本司葡萄干萃取物主要采用新疆产的葡萄干为原材料,通过石油醚萃取制得。

  • Volatility chemical constituents of the extracts of mulberry (Moms atropurpurea R. ) by petroleum ether and ethyl acetate were analyzed by GC-MS.

    对广东桑桑椹石油醚和乙酸乙酯提取物中的化学成分进行GC-MS分析。

  • Method: Water extracts and ethanol extracts were obtained by maceration method, while petroleum ether extract was obtained by soxhlet's extracter.

    方法:用浸渍提取法从洋虫中得到水提取物和乙醇提取物,用索氏提取器提取得到石油醚提取物。

  • Overview: The Division clouds extract of tobacco from Yunnan mainly as raw materials extracted by petroleum ether extract obtained in Yunnan tobacco.

    概述:本司云烟浸膏主要采用云南产的烟叶为原材料,通过石油醚浸提云南地区烟叶制得浸膏。

  • The results indicated that petroleum ether extract had the ability to antagonize toxicity induced by ouabain, while water extract had little effect on it.

    未见水提物抗哇巴因所致豚鼠心脏毒性及抗氧自由基的作用。

  • Methods: (1)To separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.

    方法:(1)以硅胶柱色谱法,乙酸乙酯-石油醚梯度洗脱,自何首乌中提取分离二苯乙烯苷单体成分。

  • Overview: the Division tree orchid extract mainly the growth of China's Guangxi region orchid tree as raw material obtained by petroleum ether extract extract.

    概述:本司树兰浸膏主要采用中国广西地区生长的树兰为原材料,通过石油醚提取制得浸膏。

  • Overview: The Division mainly sweet clover extract of sweet clover Sichuan region of China for raw materials, petroleum ether extraction by roots in the system.

    概述:本司草木犀浸膏主要采用中国四川地区的草木犀为原材料,通过石油醚浸提根茎制得。

  • Overview: The Division mainly rock rose extract rock China's Zhejiang province rose to the growth of raw materials extracted by petroleum ether extract obtained.

    概述:本司岩蔷薇浸膏主要采用中国浙江地区生长的岩蔷薇为原材料,通过石油醚提取制得浸膏。

  • The ethanol extract from the twig bark powder of Periploca sepium was suspended in water and successively treated with petroleum ether, ethyl acetate and n-butanol.

    将杠柳枝皮粉末的乙醇提取物悬浮于水后,依次用石油醚、乙酸乙酯和正丁醇萃取。

  • MethodsTo obtain chemical constituents from Musa basioo, in this paper the methods of water extraction, ethanol extraction and petroleum ether extraction were used.

    方法采用水提取法、醇提取法和石油醚提取法对芭蕉根的化学成分进行定性实验。

  • To obtain chemical constituents from the fruit of Catalpa ovata G. Don, the methods of water extraction, ethanol extraction and petroleum ether extraction were used.

    采用水提取法、醇提取法和石油醚提取法对梓树果实的化学成分进行了比较全面的定性实验。

近义词
石油醚;石油精