- 更多网络例句与三环萜相关的网络例句 [注：此内容来源于网络，仅供参考]
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The characteristics of coal-formed oil in Suqiao-Wenan are that saturated hydrocarbons amounts to about 80% of the bulk composition and Pristane/Phytane ratios more tha...
煤成油表现出饱和烃含量极其丰富、Pr/Ph值高(大于2)、三环萜烷以低碳数(C19～C21)化合物占优势并有递减变化趋势、C24四环萜烷丰富和伽马蜡烷含量低等地球化学特征。
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It is a natural chiral compound with three chiral carbon atoms and a reactive carbo- xyl group. Like some natural drugs, it has a aromatic diterpene structure with three rings.
它是含有三个手性碳原子的天然手性化合物，有一个反应性官能团——羧基，具有许多天然药物都具有的芳香型三环二萜结构。
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By means of GC-MS-Ms method, the multiple series of age-related and taxon specific biomarkers are tested in source rocks and oil samples from Liaohe oilfield and Tarim basin, which are hard to be detected by conventional GC-MS method. They are steranes, methylsteranes, Tricyclic and tetracyclic diterpanes, methyl hopanoid alkanes and hexacyclic hopanoid alkanes, etc.
利用色谱－质普－质普方法在辽河与塔里木盆地源岩和原油样品中，检测出了多个系列时代相关及特定种属生物标志物，包括：降胆甾烷系列、甲基甾烷及甲藻甾烷系列、三环二萜烷及四环二萜烷系列、六环蒮烷及甲基藿烷系列等等，这些化合物很难用常规GC-MS形方法检测到。
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Terpenoids had business with the life of humanbeings. The last twenty years developments of tricyclic diterpenoids were reviewed.Biologic activities of tricyclic diterpenes which had oxygenous guoups on the 1, 2 or 3 position were reviewed. The important applications and some methods of introducing oxygenous groups on these three positions in recent 20 years were also obtained.
萜类化合物与人类生活密切相关，本文简要介绍了近二十年来三环二萜类化合物的最新研究进展，综述了在C-1、C-2、C-3号位上具有含氧官能团的三环二萜类化合物的生物活性、重要应用，并报道了近二十年来在这三个位置上引入含氧官能团的一些常见方法。
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Biomarker parameters of transgressive member have specific characteristics:Pr/Ph less than 1,higher abundance of steranes,abundance of C27 are similar to C29 stertane,tricyclic terpane with feature of C21＜C23＞C24 and isotopic composition of n-alkanes enriched 12 C.
在生物标志化合物参数方面表现为Pr/Ph小于1，甾烷含量丰富，甾烷中C27化合物丰度与C29相当，三环萜烷有C21＜C23＞C24的分布特点，单体烃同位素表现出富集轻碳同位素的特点。
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The marine crude oils in Huangqiao Area are characteristic of the high Pr/Ph value (＞1), the abundant tricyclic terpane series (tricyclic terpane series/hopane series＞0.8), the heavy carbon isotope and high δ〓C value (＞-29‰).
黄桥地区海相成因原油具有Pr/Ph＞1，三环萜烷系列丰度高(三环萜烷/藿烷系列＞0.8)，富含重碳同位素，δ〓C＞-29‰的特征。
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The content s of 13α,14α isomers in the pairly distributed tricyclic terpanes decrea sed sharply with the increase of depth. So the tricyclic terpane maturity parame ters can well reflect t...
据此提出可以三环二萜烷热演化参数TCT，即αα构型向βα构型转化率来表征未成熟和低成熟生油岩中有机质的热演化程度。
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This thesis aims at the studies on the synthesis routes of aromatic and unaromatic tricyclic diterpenoids.
本论文工作以芳香型三环二萜和非芳香型三环二萜的合成路线为研究对象，包括五部分：第一章三环二萜类化合物研究综述按照三环二萜的分类。。。
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The combined acids , LHZZS,XDZZS and SLZZS, one of four fractions in montan resins from montan waxes from Liaohu, Xundian and Shulan brown coal respectively, were derived by CH 2N 2 to methyl esters and their chemical constituents and structural characteristic were studied on GC-MS.
结果显示，树脂结合酸均以正构烷酸为主要成份，其分布为C1 2 ～C2 8，高含量的正构烷酸集中在低碳数一端，C2 0 含量最高，其次为C1 6 ，而舒兰结合酸中，正构烷酸占绝对优势，且C1 6 为最高含量的化合物；去氢松香酸在每一个样品中含量较低，其它三环二萜酸，如松脂酸、三达松脂酸等异构体或立体异构体含量也非常低；具有五环三萜骨架的酸性物质，在潦浒、舒兰结合酸中比较丰富，其含量超过寻甸结合酸；在低碳数一端，存在着各种支链烷酸及苯甲酸、苯酚及取代物。
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The distance difference between 6/8/6/4 taxoids and 5/7/6/4 taxoids indicates that the role of oxetane is to form a suitable bow-shaped skeleton with 6/8/6 tricycle.
环氧丙烷结构类型化合物弓形口间距值明显区别于其它三类化合物；5/7/6/4与6/8/6/4类型化合物弓形口距离不同，说明紫杉烷二萜化合物的环氧丙烷结构对活性的作用是和6/8/6三环骨架共同支撑一个合适大小的弓形架。
- 更多网络解释与三环萜相关的网络解释 [注：此内容来源于网络，仅供参考]
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tricycle landing gear：三轮式起落架
tricycle gear 三轮起落架 | tricycle landing gear 三轮式起落架 | tricyclenic acid 三环萜酸
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isotrimorphism：同三晶形
isotricyclene 异三环萜 | isotrimorphism 同三晶形 | isotrimorphism 同三晶形
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tricyclic terpane：三环萜烷
三缸单作用泵|triplex single action pump | 三环萜烷|tricyclic terpane | 三甲苯氧化|trimethyl benzene oxidation
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tricyclic hydrocarbon：三环烃
tricyclic diterpane 三环二萜烷 | tricyclic hydrocarbon 三环烃 | tricyclic naphthenes 三环环烷