油精

There are a lot of researches show that essential have the control effect on agriculture pest, but there have not been reported the biological activity of bitter almond oil on pest.

大量的研究表明植物精油对农业害虫有不同程度的防治效果，但苦杏仁精油对害虫的生物活性研究在国内外均未见报道。

In order to determine the technological parameter of essential oil extracted from bitter almond by wet distillation,factors influenced the oil yield,such as hydrolysis time and temperature、distilling time、water adding amount and hydrolysis pH,etc.

为确定水蒸气蒸馏提取杏仁精油的工艺参数，以正交试验和单因素试验相结合的方法对影响杏仁精油提取率的水解时间、水解温度、蒸馏时间、加水量以及水解pH等因素进行了研究。

Populations inhibitory effect of two kinds of bitter almond oil against Sitophilus zeamais Mots showed that the populations inhibitory effect of F1 and F′is decreased with the decrease of concentration, the populations inhibitory rate of F1 and F′is between 30% and 100%, 29.39% and 58.19% respectively.

种群抑制活性结果表明苦杏仁精油对玉米象F1代以及F′代的种群抑制活性随着处理浓度的降低而逐渐降低，两种处理的苦杏仁精油对玉米象F1代的种群抑制率范围在30%～100%之间，对F′代的种群抑制率范围在29.39%-58.19%之间。

The contact toxicity of two kinds of bitter almond on Musca domestica vicina, Mythirmna separata and Sitophilus zeamais was studied. The result showed that the contact toxicity of bitter almond oil is stronger with the increase of concentration.

含有和去除HCN的苦杏仁精油对家蝇、粘虫以及玉米象的触杀活性结果表明随着浓度的增大，精油对三种试虫的触杀活性增强。

Compareing with essential oil of the steam distillation method and the bensine solvent extraction method through GC-MS analysis .The result showed that:the essential oil principal constituent extracted by benzine is camphene,a-pinene,bornyl acetate, limonene, 1-methyl-4-(1-methylethyl)-1,4-cyclohexadiene, myrcene, caryophyllene, borneol.

对巴山冷杉针叶水蒸气蒸馏和石油醚萃取所得精油的GC-MS 分析对比研究结果表明：石油醚萃取精油主要成分为：莰烯，a-蒎烯，乙酸龙脑酯，柠檬烯，1-甲基-4-异丙基-1，4-环己二烯，月桂烯，石竹烯，龙脑。

These two oils each contain limonene and carvone, but each oil contains a different isomer of these chiral compounds.

这两种精油各自都含有柠檬烯和香芹酮，但每种精油都是由具有不同手性的柠檬烯和香芹酮的异构体所组成的，在这个实验课中，学生会接触到真空蒸馏操作。

The fir essential oil was extracted from fir root by steam distillation method, from which cedrol was extracted, and then, cedrol methyl ether was synthesized based on cedrol.

以杉木根为原料通过水蒸气蒸馏法提取杉木精油，从杉木根精油中精制提取柏木脑，再以柏木脑为原料合成甲基柏木醚。

Main Ingredients: Citronellol, geraniol, nerol, phenylethyl alcohol,sesquiterpene.

保加利亚玫瑰精油Bulgaria rose oil：脂吸法取得的精油气味通常较为完整

Besides, the experiment also proves that Cryptomeria japonica essential oil is quite safe for the mice that take high-dose essential oil do not show obvious toxic reaction.

此外，也在实验中发现，小鼠即使服用极高的柳杉精油，也无毒性反应的产生，证实使用柳杉精油有极高的安全性。

It is recorded by Essential Oil Complete Works that Ginseng essential oil can relieve xerosis cutis, improve cutaneous circulation and promote metabolism.

《精油全书》中记载人参精油有缓解皮肤干燥，促进皮肤血液循环，增进新陈代谢。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。