查询词典 distillation

The steam distillation method showed the best result which reduced the contents of the volatile cornpound to 38 percent of those in crude snake oil.This method reduced 60 to 100 percent of main odorous compounds,and retai...

结果表明水蒸汽蒸馏是效果最佳的脱腥方法，它可使蛇油挥发性成分的量降至脱腥前的38%，使腥味的主要成分减少60%~100%，同时较大程度地保留了多不饱和脂肪酸。

Nepetalactone, the primary component of catnip oil, were extracted by the using method of simultaneous distillation-extraction and separated by using silica gel chromatography column. To compare the repellency of nepetalactone and DEET on mosquitoes, topical bioassay method on the skin and a cage olfactometer were employed to assess the effective protection time and the spatial repellency.

采用同时蒸馏萃取及硅胶柱层析法从猫薄荷Nepeta cataria植物中提取、分离制得驱蚊有效成分假荆芥内酯，并采用个体涂肤有效保护时间测定法及风洞空间驱避效果测试法，对假荆芥内酯与避蚊胺的驱蚊效果进行了对比试验。

The volatile oils were extracted from Jinshangzhitong plaster,Radix Angelicae Sinensis, Olibanum and Myrrha by steam distillation and identified by GC-MS.

采用水蒸气蒸馏法分别从当归、乳香、没药、筋伤止痛贴中提取挥发油；用气相色谱-质谱法对其化学成分进行鉴定，同时用峰面积归一化法测定样品中各组分的质量分数，并考察各单味药材在成品中的转移率。

The volatile oil s were extracted from Jinshangzhitong plaster,Radix Angelicae Sinensis,Olibanum and Myrrha by steam distillation and identified by GC-MS.

采用水蒸气蒸馏法分别从当归、乳香、没药、筋伤止痛贴中提取挥发油；用气相色谱-质谱法对其化学成分进行鉴定，同时用峰面积归一化法测定样品中各组分的质量分数，并考察各单味药材在成品中的转移率。

Result The overall results of pararosaniline hydrochloride were larger than that of advanced constants distillation trace titration but the difference was slight. The SO2 residues of three kind of Konjac powder were Yunnan Jianjing white konjac 2.35 g/kg; Sichuan Yibin white konjac 2.21 g/kg; Sichuan Yibin flower konjac 1.93 g/kg.

结果］盐酸副玫瑰苯胺法测定的整体结果比常量蒸馏微量滴定法的结果偏大，但差异不显著；测得3种魔芋精粉的SO2残留量分别为云南健晶白芋2.35 g/kg；四川宜宾白芋2.21 g/kg；四川宜宾花芋1.93 g/kg。

The essential oil of the Pelargonium graveolens was obtained by steam distillation in different month of growth and analyzed by GC-MS.

不同月份的精油的含有率及其成分变化进行研究。

The aromatic oil in 33 samples of perilla collected from China and Japan is studied by using steam distillation.

采用水蒸气蒸馏法研究了中国和日本各地的33份紫苏试材芳香油的含量。

By steam distillation and petroleum ether extraction,respectively,and the chemical constituents of the volatile oils were analyzed and identified by GC-MS.

分别采用水蒸气蒸馏和石油醚萃取法提取白花茵陈中的挥发油，并通过GC-MS对其化学成分进行了分析鉴定。

In combination with the situation that apparent color of phenol product turns red, measure of strengthening fee quality control, optimized phenol distillation process, strengthening mass flow control, the discoloration issue was relieved.

结合生产中出现的苯酚产品外观颜色变红的情况，提出了加强原料质量控制、优化苯酚蒸馏工序、加强物流控制等措施，减轻变色问题。

The commonly used drug for treatment of psoriasis, such as coal tar, pine oil distillation is basically safe, even if the long-term applications are rarely cancer, domestic and foreign medical experts from the perspective of this enzyme to make an explanation.

而治疗 银屑病常用的外用药，如煤焦油、松馏油等，基本上是安全的，即使长期应用也绝少致癌，国内、外医学专家已从酶学观点对此做出了解释。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐