天然的物质

Based on the retrieval and analysis of the Bibliographer, the methods of water-disitillation extraction, sametime-disitillation extraction and supercritical CO_2 extraction for the extraction of three typical kinds of natural substances in Zhejiang Province were evaluated exp...

论文在文献阅译和工艺原理分析的基础上，以浙江比较有特色的三种天然物质为研究对象，实验评估了水蒸气蒸馏、同时蒸馏萃取和CO_2超临界萃取等方法，研究了金柑挥发油、白玉兰花挥发油和香菇精等三种天然香精的不同提取工艺，重点研究了CO_2超临界萃取工艺与成份分析方法。

Based on the retrieval and analysis of the Bibliographer, the methods of water-disitillation extraction, sametime-disitillation extraction and supercritical CO_2 extraction for the extraction of three typical kinds of natural substances in Zhejiang Province were evaluated experimentally.

论文在文献阅译和工艺原理分析的基础上，以浙江比较有特色的三种天然物质为研究对象，实验评估了水蒸气蒸馏、同时蒸馏萃取和CO_2超临界萃取等方法，研究了金柑挥发油、白玉兰花挥发油和香菇精等三种天然香精的不同提取工艺，重点研究了CO_2超临界萃取工艺与成份分析方法。

All substances in nature can be wholly called as natural substances, among which those that are generated by interactions between human beings and inartificial nature are called man-made substances, and those that have no connections with human interactions are called inartificial substances.

摘 要：自然界中的所有物质包括人在内可统称自然物，其中人与天然自然相互作用的产物叫人工物，与人类作用无关的自然物叫天然物。

In biotechnology pharmaceuticals, medical intermediate production and bioactive compounds separation from natural products ,the molecular distillation can realize the separation of high boiling point, thermal and air sensitive compounds.

在生物制药和医药中间体的生产以及天然产物中活性物质的提取过程中，分子蒸馏可以实现高沸点、热敏性和易氧化物质的分离。

It is also a much more natural alternative to store-bought shampoos which contain a lot of chemicals.

它比商店里含大量化学物质的洗发液拥有更多的天然物质成分。

This paper reviews the recent progress on the Chinese syntheic research of marine natural products according to type classifications: marine cyclopeptides, cembranes, cembrenss, cembranolides, quinolone derivativcs, triacetonamine and subergorgic acid analogues.

由于海洋中的生物资源非常丰富，海洋中的生态环境与陆地显著不同，因此海洋天然产物具有独特的化学·结构和多种多样的生理活性。对这些物质的合成进行深入地研究，必将丰富天然产物化学的内容，促进有机化学基础

This product is rich in OPC from grape, many kinds of vitamins and mineral. It can also nourish your hair when you use it to dye your hair. It can effectively prevent damage from ultraviolet and chemical substance. Its compound pigment particles can make your hair refresh and shiny. GDS can help form a cerated film on the surface of hair and your hair will look shiny and vigorous. It has used the newest way to lock color so that artificial pigment particles and natural pigment particles can be well integrated and the color can last for long.

成份功效：富含从天然葡萄中提取出来的OPC葡萄多酚、多种维他命及矿物质，染发的同时滋养秀发，有效防护紫外线及化学物质的伤害；复合性色素粒子，令染发效果更鲜艳，亮丽；GDS增光因子，能在发丝表面形成一层天然蜡膜，令秀发光亮润泽，充满生机；最新固色方法，使人工色素粒子和自然色素粒子结合更紧密，颜色效果更持久。

The Nazarov cyclization, a powerful tool for the construction of five-membered carbocycles from divinyl ketones and related compounds, has attracted increasing attention in recent years due to its wide applications in the synthesis of complex natural and unnatural products.

Nazarov环合反应是通过二烯酮类物质和类似化合物构建五元碳环的有效方法。由于该方法广泛地应用于复杂天然和非天然产物的合成，近年来引起人们的广泛关注。

C Natural rubber modified by grafting or mixing with plastics,depolymerized natural rubber, mixtures of unsaturated syn- thetic substances with saturated synthetic high polymers provided that all the above-mentioned products comply with the requirements concerning vulcanisation, elongation and recovery inabove.

三与塑料接枝共聚或混合而改性的天然橡胶、解聚天然橡胶以及不饱和合成物质与饱和合成高聚物的混合物，但这些产品必须符合以上款关于硫化、延伸及回复的要求。

Comparative study on two levels of population and modules of mutualspecies in the two stations demonstrates that feature index tend to diminish suchas height,tussock amplitude,size,number,density and dry weight;and thegrowth analysis index incline to increase such as RGR、ULA、chlorophyllcontent and effectiveness of plant multi-leaves of the populations and DULA、DUMR、DAGA and DRGRa of the modules;and the dynamic curves of thepopulations and the modules also tend to steadily increase along with thetemperature ascending,heat accumulation and combination between water andheat in moderate-temperature steppe from fierce fluctuation alongside naturalprecipitation in warm-temperature steppe,illustrating that the transformabletendency from increasing the numbers of tussocks and tillers in order to expandthe resource range to seize in warm-temperature steppe to steadily improve drymatter production function of the populations and the modules in moderate-temperature steppe.

两个不同热量型研究站点共有种种群与构件两个水平的比较研究表明：随纬度增加和气温降低，种群与构件高度、丛幅、大小、数量、密度和干重等特征指标趋于降低和减少，而种群RGR、ULA、叶绿素含量和植物多叶性与构件DULA、DUMR、DRGR和DRGRa等生长指标则趋于增加，种群与构件的生长动态曲线也从随天然降水而剧烈波动趋向于随气温升高、热量积累和水热配置状况而稳定增长，说明各共有种从暖温型草原区增加植物种群与构件的大小和数量以扩充资源利用范围向中温型草原稳定地提高种群与构件的干物质生产性能的方面转变的趋势；同时，物质与能量的分配也从较多地投资于繁殖器官产生大量后代以适应未来降水的不可预期变化趋向于同化系统的构建和干物质生产效能的提高以抵御低温和干旱对物种生存的威胁，充分显示出不同温度条件及其水热组合对植物种群形态结构和生长繁育模式的显著影响及其响应特征。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。