成分

In this thesis, we intended to eliminate the a -Fe phase by adjusting the composition and the cooling velocity. The effects of Sm content, cooling velocity and the additions of Nb and Zr on the microstructures of Sm-Fe alloys and magnetic properties of Sm2Fe17Nx were studied. Effects of nitrogenation techniques on magnetic properties were also studied.

本文力图通过控制合金成分及冷却速度的方法来消除Sm-Fe合金中初生的α-Fe相，系统地研究了Sm含量，凝固速度及Nb和Zr的添加对Sm-Fe合金微观组织的影响，及合金成分和氮化工艺对Sm_2Fe_(17)N_x磁性能的影响。

The author doesn't regard the affixes deriving nonindependent stems as the component of the compound affixes.

我们没有把具有派生非独立词干能力的构词附加成分看作&复合式附加成分&的组成部分。

As revealed by the voltage topographic maps and the tomographic mapping, the source location of the distinct N1 is in the occipitotemporal areas.

并且，与单纯形状知觉任务相比，图形形状和空间位置知觉任务表现枕颞区N2波幅的显著减弱，P3潜伏期的王著缩短，额区的P2波幅的显著减弱；(3)脑电地形图与高分辨率断层成象显示，两种任务的特征波N1成分均来源于双侧的枕颞皮层，表明两种任务均涉及到与物体形状识别相关的视皮层腹侧通路，而差别波dN2成分来源于左侧枕颞区，暗示特征加工的差异主要发生在左侧枕颞区。

A technique for the analysis of flavour compounds from fish muscle employing microwave distillation, solid phase microextraction coupled with gas chromatography-mass spectrometry and olfactometry is described, and 53 compounds responsible for the aroma of bighead carp were identified from NIST 02 MS data base.

用微波蒸馏-固相微萃取装置提取鳙鱼鱼肉中的挥发性成分，利用气相色谱-质谱联用仪对气味化合物成分进行了定性分析，同时利用嗅觉检测器鉴别了部分挥发性物质的气味特征。

The main flavour components, betaines, inorganic ions such as K+, Na+, Ca2+, Fe2+, Zn2+, PO3-4and Cl-and free amino acid in the raw Ommastrephes bratrami were extracted by hot water, 80% ethanol, cold water or 80% ethanol after cold water.

日本早在70年代就曾对一些名贵水产品(如柔鱼、鲍鱼、龙虾和蟹等)中的主要呈味成分进行过研究[1]，并以此为依据开发研制出多种模拟海味食品。1999年中国在北太平洋捕捞柔鱼的总产量虽然高达13 2万t[2]，但目前国内仅利用柔鱼制造柔鱼干、柔鱼丝、薰制品、罐头制品等，利用价值较低，对于这些制品的呈味成分的研究，国内尚未见报道。

The article has researched occupation of ions in jadeite, diopside and omphacite in jadeite jade on the base of 222 components data. The author has calculated all theie formula and testified that ∑ and ∑ should be positive correlation.

以222点电子探针的化学成分为依据，研究了翡翠中重要组分矿物硬玉、绿辉石和钠铬辉石的离子占位，离子间交换规律等，着重讨论了透辉石—绿辉石—硬玉固溶体系列的类质同象替换，并通过对所有成分点的晶体化学式的计算，验证了∑与∑呈正相关等理论。

Although most of the ornithophilous genera are tropical components of the Chinese flora, there are several temperate elements of which the diversity centres are in China, such as the genus Rhododendron.

这些植物类群在中国的植物区系中主要表现出热带成分的特征，但其中也有温带成分。

ResultsTwenty-five compounds were identified,palmitic acid(24.49%) and linoleic acid(22.02%) of them are main components.

结果分离鉴定出25种成分，其中棕榈酸含量最高，亚油酸次之，为该部位的抗炎、抗癌活性成分。

The north temperate, the pantropic, the East Asia, the cosmopolitan, the old world temperate and the East Asia and North America disjuncted distribution were main types of pesticide seed plants in Henan Province.

河南农药植物区系组成中，以北温带、泛热带、东亚分布、世界广布、旧世界温带分布、东亚和北美洲间断分布6种为主，植物区系中热带成分约为温带成分的3/5。

Current patterns of floral design in Pedicularis must have undergone an evolutionary process of interacting among components of floral traits, and then formed internal relationships among these traits.

马先蒿属植物当前花部结构的变异式样一定是各种花部结构成分在进化历程中相互作用的结果，并在这些成分间形成内在的相关性。

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。