莰

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。

Among them,--α-Pinene、--β-Pinene、--3-Carene are the three main compounds which account for above 96% of monoterpines, and a small amount of other monoterpines,-limonene, myrcene, camphene, phellandrene.

而对于经常构成蠹类害虫树体引诱剂组分的萜烯类成分在其中占居较高的比重，主要为3种成分--3-蒈烯，--α-蒎烯和--β-蒎烯，占萜烯类总量96％以上。另外还含有少量的柠檬烯、香叶烯、莰烯和萜品油烯等成份。

By means of GC, GC-MS, GC-IR, the reaction products were investigated and the results showed that there are triylene, camphene, limonene, p-cymene, terpinolene -terpinene,-terpinene,-fenchyl formate, linalyl formate, terpinyl formate, bornyl formate and isobornyl formate containing in the products,and linalyl formate was first discovered in addition reaction of a -pinene and formic acid .The content of the main product terpinyl formate is up to 60.4%,the selectivity is 64.5%.

采用GC、GC-IR、GC-MS等对反应产物进行定量和定性分析，结果表明：微波辐射下α-蒎烯与甲酸的反应产物含有三环烯、莰烯、对-伞花烃、α-松油烯、γ-松油烯、柠檬烯、异松油烯、甲酸葑醇酯、甲酸异龙脑酯、甲酸龙脑酯、甲酸芳樟酯、甲酸松油酯。

Coleophora obducta (Lepidoptera: Coleophoridae) is a defoliator of larch and exclusively latent in leaves. This article tested behavioral responses of C.

运用触角电位仪和"Y"型嗅觉仪测试鞘蛾对落叶松9种挥发物，即R-α-蒎烯、S-α-蒎烯、β-蒎烯、罗勒烯、水芹烯、3-蒈烯、月桂烯、莰烯和叶醇的EAG和行为反应。

Other chemicals that are available are Apiin, apiol, bergaptein, myristicin, pinene, glycoside, camphor, petrocelinic acid, furanocumarine, iodine, and phosphorus.

还有其他例如芹黄苷，洋芹醚，香柑脑，肉豆蔻油醚，蒎烯，葡糖苷，莰酮，岩芹酸，香豆素，碘，磷等化学元素，这些都能蕴含在欧芹叶中。

And the contents of high boiling point components such as camphor, borneol and bornyl acetate in flower oil which are 11.97 %,8.48 % and 4.29 % respectively, are higher than those in leaf oil.

含量测定结果表明花油中α-蒎烯，莰烯，β-蒎烯，α-水芹烯和β-月桂烯等低沸点成分含量分别为17.58 %，13.19 %，1.13 %，2.03 %，1.02 %，比叶油低；而樟脑，龙脑和乙酸龙脑酯等高沸点成分的含量分别为11.97 %，8.48 %，4.29 %，比叶油高。

Coleophora obducta (Lepidoptera: Coleophoridae) is a defoliator of larch and exclusively latent in leaves. This article tested behavioral responses of C.

运用触角电位仪和&Y&型嗅觉仪测试鞘蛾对落叶松9种挥发物，即R-α-蒎烯、S-α-蒎烯、β-蒎烯、罗勒烯、水芹烯、3-蒈烯、月桂烯、莰烯和叶醇的EAG和行为反应。

Synthesis of isobornyl methacrylate by using macroporous sulfonic ion exchange resin as catalyst has been realized.

以大孔强酸性高于交换树脂为催化剂合成甲基丙烯酸莰醇酯。

Green tea contains a number of flavonols with the basic structure Specific flavonols found in tea include myricetin (hydroxyls at carbon 3', 4', and 5'), quercetin (hydroxyls at positions 3' and 4'), and kaempferol (hydroxyl at position 4'), and their glycosides.

绿茶含有一些黄酮醇，其基本化学结构为：茶中特有的黄酮醇有杨梅黄酮(3'、4'、5'碳位上羟基化)、豕草花粉苷(3'和4'碳位上羟基化)，莰非醇(4'碳位上羟基化)，以及它们的糖苷物。

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