主要成分

It mainly included the physical and chemical methods on nutrients, additives, noxious and adulterate substance in food, as well

它主要讲述食品成分的理化检验方法及仪器分析方法，包括食品的营养成分、添加剂、有毒有害物质等的分析检验方法。

Progress on Research of chemical constituents of Ailanthus, especially alkaloids and triterpenes is reviewed.

综述了臭椿属植物化学成分的研究进展，详细总结了主要化学成分生物碱及2000年至今所发现的三萜类化合物的研究进展。

The main active ingredient is copper and alkyl ammonium compounds, the active ingredient content of 15%.

主要活性成分是铜和烷基铵化合物，活性成分的含量为15%。

This paper also shows the distribution of the fluorine in sediments of the area is mainly controlled by the chemical composition of the material from the surrounding islands, and the element seems to be incorporated by the hornblende at the most extent, thus the correlation between the element and the hornblende amount in the sediments can be expressed statistically as following: F=217+lnVh.

研究结果表明，测区沉积物中氟含量分布主要受周围岛屿风化基岩的化学成分制约；沉积物中主要含氟矿物：萤石/磷灰石、黄玉、黑云母等含量极低，氟在沉积物中赋存的矿物相主要与角闪石[AX_2Y_5Z_8O_(22)_2]有关。氟含量与碎屑矿物中角闪石的体积比间的关系式可大致表示为：氟含量=217+361nV_H；间隙水中的低氟主要由测区化学风化不发育及氟的钙盐沉积所致。

Lithologies are mostly sand and carbonate rocks, caps are mud rock, shale and magmatite. Entrap types are anticline, fault block rebuilt by breaking and the screened entrap diapered rock mass. The composition is CO_2, N_2, CH_4, C_2H_6 and He etc. It is magma air source body and its geologic fashions are intrusion and buried volcanic conduit. The relations between gas reservoirs and gas source bodies have three types: magma intrusion-breaking-communicated gas reservoir, magma intrusion-contacted CO_2 reservoir and buried volcanic conduit-contacted gas reservoir. The CO_2 migration in magma intrusion is consisted of fusing and crystallizing phases;it in volcanic conduit is consisted of near-surface effusion and crystallizing phases.The buoyancy of CO_2 in water far more than migration resistance in breaking or chink, CO_2 is easy float upward, the floating can results in differentiation of different density gases and concentration of sealed gas. The gas in sand reservoir firstly migrate into the higher porosity and coefficient of permeability sand, and along with the pressure going up it migrate into the lower. In magma intrusion-breaking-reservoir migration, CO_2 firstly migrate into watered breaking, began gravity differentiation and concentrate, the gas pressure time and again go up, CO_2 migrate into reservoir and concentrate under expansibility as the pressure reach upward a given extend. The CO_2 in reservoir experience four breaking modes: chemistry deposition, dissolution, diffusion and mechanic breaking, the pressure balance can be broken by faulting and the CO_2 will further migrate and form new reservoir.

济阳坳陷已发现的八里泊、阳25、平方王、平南、高青、花17 CO_2气藏主要储集层位有奥陶系、中生界、沙四段、沙三段、沙一段、馆陶组和明化镇组，储集层岩性以砂岩和碳酸盐岩为主，盖层以泥质岩、页岩和岩浆岩为主。；圈闭类型主要为受断裂改造的背斜、断块及刺穿岩体遮挡圈闭。；气体成分主要有CO_2、N_2、CH_4、C_2H_6、He等。；主要气源体为岩浆气源体，气源体的主要地质形式为侵入体和埋藏的火山通道。；气藏和气源体的空间关系有岩浆侵入体一断裂一气藏沟通型、岩浆侵入体-CO_2气储集层接触型和埋藏火山通道-气储集层接触型三种类型。；岩浆侵入体CO_2气运移分为熔融运移阶段和结晶运移阶段，火山通道中CO_2气运移分成近地表喷发阶段和结晶运移阶段。；断裂中，CO_2在水中的浮力远大于运移阻力，CO_2气容易上浮，CO_2在断裂中的易浮性导致不同密度气体的分异和走向上封闭的断裂气体相对富集。；气体在砂岩储集层运移聚集具有选择性，会优先进入孔隙度和渗透率较高的砂岩，随着压力增加，才会进入孔隙度和渗透率较低的砂岩；在岩浆气源体-断裂-储集层空间输导格架下，CO_2气在膨胀力的驱动下，首先进入含水的断裂并重力分异而聚集，气体压力会不断增高，当压力增至一定程度，CO_2气会向高孔隙度、渗透率的储集层运移并聚集。；在岩浆气源体-储集层接触空间输导格架下，CO_2气受膨胀力的驱动直接向储集层运移并聚集。；成藏的CO_2气会经历化学沉淀、溶解、扩散和机械破坏四种破坏方式，会受断裂切割而打破压力平衡，沿断裂进一步运移和聚集成藏。

Milk formula in the composition is the most important and what for what ingredients to add, we should add the number, composition ratio between the amount of how much, and so on in strict accordance with the provisions of a need for expert preparation.

配方奶粉中的组合成分是最主要的，什么适合添加什么成分，应该添加多少，成分之间量的比例是多少等等，都需要专家严格按照规定配制。

The results showed that SFE-CO_2 was the ideal method to extract volatile oils from lotus leaves. GC-MS was applied to isolate and analyze the components of extracted volatile oils. 76 components were detected, among which SD and SE detected 23 components respectively, while SFE-CO_2 detected 52 components. The main ingredients were terpenes, alcohols, esters, ketones and alkyls, etc.

并通过GC-MS联用技术，对提取得到的挥发油组分进行了分离分析，共检出76种成分，其中水蒸气蒸馏法和有机溶剂提取法分别检出23种成分，超临界萃取所得荷叶挥发油检出52种成分，主要为萜烯、醇、酯和酮、烷类化合物等。

This article mainly divides into three parts, The first part is the albite jade characteristic, uses traditional the gemology method conducts the research to the albite jade physical property as well as the structure, carries on the electron probe analysis to its chemical composition, and the discussion of its mineral component\'s chemical composition change carries on the SPSS statistical software; uses X powder crystal diffraction to determine its lattice parameter, mineral constituent\'s crystal structure conducts the research to the albite jade, carries on the analysis to the feldspar degree of order, and carries on the discussion to the albite jade\'s origin. The above method each other confirms mutually, confirms the data reliability.

本文主要分为三部分，第一部分为钠长石玉的性质，采用常规的宝石学方法对钠长石玉的物理性质以及结构构造进行研究，利用电子探针分析对其化学成分进行分析，并运用SPSS统计软件对其矿物成分的化学成分变化进行探讨；采用X粉晶衍射测定其晶胞参数，对钠长石玉中矿物组成的晶体结构进行研究，对长石的有序度进行分析，并对钠长石玉的成因进行探讨；上述方法彼此相互验证，以证实数据的可靠性。

So far, because of the components of AN are very complex, the mechanisms of AN-induced cytotoxicity to cause cell aberrations and oral diseases are not clearly understood. The purpose of this study is trying to investigate the roles of two check point kineses: Chk1/Chk2 in the ANE-induced geno- and cytotoxicity.

但由於槟榔成分过於复杂，对於槟榔成分究竟是如何造成各种细胞变异甚至口腔疾病的详细致病机转目前并不清楚，因此本篇研究的主要目的即是针对细胞内两种细胞周期检查点Chk1/Chk2在槟榔成分所造成的基因与细胞毒性中所扮演的角色进行探讨。

Meanwhile, the difficulty in acquiring data and equivalences in China should be considered too.

同时，利用成分法进行生态足迹分析尚需根据国情进一步完善和加强，在我国应用生态足迹的成分法分析模型的主要困难是数据的收集和均衡因子的取得，但根据我国可持续发展的战略性需求，成分法分析模型必将得到广泛应用。

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。