主要成分

This paper presents the method to separate the major components from hawthorn by ultrasonic and macroporous resin.

介绍了用超声提取及大孔树脂分离山楂中主要成分的方法。

The main ingredient hematoporphyrin is 1, 3, 5, 8-tetramethyl-2,4-di-porphin-6,7

啉。其主要成分血卟啉的化学名为1，3，5，8，-四甲基-2，4-二-卟吩-6，7-二丙酸。

Xylan is the major component of hemicellulose, which is the second largest recyclable natural resource after cellulose.

木聚糖是植物半纤维素的主要成分，是自然界中仅次于纤维素的可再生资源。

Second only to cellulose in natural abundance, xylan is a major component of hemicellulose fraction of the plant cell walls.

半纤维素是仅次于纤维素含量第二丰富的可利用自然资源，其主要成分是木聚糖。

The experiment gone in a hermetical batch reactor,in this paper cellulose was hydrolyzed with extremely low acid as the catalyst in the high-temperature and high-pressure condition. Factors influencing the sugar yield and cellulose conversion ratio by hydrolysis including reaction time and the concentraction of the acid were studied systematically.

本实验是在密封性良好的间歇反应器中，以生物质的主要成分纤维素为原料，在高温高压条件下进行了极低浓度硫酸为催化剂的均相水解反应研究，系统研究了停留时间、酸浓度对水解糖产率和纤维素转化率的影响规律。

Humus is the main component of soil organic matter, a great impact on soil fertility.

腐殖质是土壤有机质的主要成分，对土壤肥力影响很大。

Hydrocarbon was main composition of engine fuels, It's combustion process concerned engine's performance.

烃类是发动机燃料的主要成分，它的着火过程关系到发动机性能的好坏。

Fluoride is a major component of the low hydrogen electrode. It can react with hydrogen during welding to produce hydrogen fluoride, and decrease the hydrogen content of weld bead.

氟化物是低氢系手工电焊条的主要成分之一，在焊接时可与氢反应产生氟化氢，使焊道氢的含量降低。

Main components: henna red elements, blood cells and recycling factor of live micro-elements, flowers alcohol, flower Sanso, ice Su VC activity, vitamin E, heparin, blood nerve activin - algal compounds lichens uronic shell, glutamic acid, almond oil , shea butter, GTCC, QP oil and other active elements, by the multiple emulsion, and carefully made preparation.

主要成分：指甲花红素、血细胞再造因子微活素、花醇、花酸素、冰晶素VC活性、维生素E、肝素钠、血神经激活素——藻化物地衣糖醛、壳谷氨酸、杏仁油、乳木果油、GTCC、QP油脂等多种活性素，经多重乳化，精心配制而成。

Totally two formulas are designed,one using four compositions and the other including five,while butadiene imide emulsifier is applied by both of the formulas.

该系列乳化炸药包括SEM－4型四组分和SEM－5五组分两种产品，二者均采用一种以丁二酰亚胺为主要成分的高分子复合乳化剂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。