测定法

At present,the sample pre-processing methods mainly include wet digestion,dry digestion and microwave digestion and so on;and the determination methods mainly include inductively coupled plasma mass spectrometry,atomic absorption spectrometry and atomic fluorescence spectrometry,etc..

目前常用的样品前处理方法主要有湿法消解、干法消解和微波消解法等；常用的测定方法主要有电感耦合等离子体质谱法、原子吸收光谱法、原子荧光光谱法等。

Various dating methods have been proposed such as radiochemical dating by 10Be and U-Th series, biostratigraphy, magnetostratigraphy, Sr stable isotope method, estimates from the age of substrate, and determinates by regressive formulas.

常用的生长速率测定方法有：10Be和U-Th系放射性同位素测年法、生物地层法、磁性地层法、稳定同位素法、基岩年龄推定法，以及经验公式计算法等。

The result indicated that, DTA and DSC apparatus constants of CDR-1 dynamic differential thermal analyzer increase along with temperature increment, but influence of temperature on DTA apparatus constant is more remarkable.

采用6种标准物质测定CDR-1型差动热分析仪的差热分析法和差示扫描量热法仪器常数，结果表明：CDR-1型差动热分析仪的差热分析法和差示扫描量热法仪器常数均随温度的升高而增大，而差热分析法仪器常数受温度的影响更为显著。

A method was developed for the extraction and determination of oleanolic acid from Chinese quince.

本文应用回流提取法、索式提取法、冷浸提取法和超声波提取法对木瓜中的齐墩果酸进行了分离提取，并采用高效液相色谱法测定其含量。

In this paper,use the AAS,Kjeldahl,Soxhlet extraction,capacity analysis,colorimetric method,to determined the nutrition ingredient of Sansevieria trifasciata prain.

采用火焰原子吸收法、凯氏定氮法、索氏提取法、容量分析法、比色法等对虎皮兰中营养成分进行了测定。

In an acetate buffer of pH 6.0,and in the presence of CTMAB,a stable complex,having the mole ratio of 1 to 3,was formed between cobalt ion and nitroso R salt,which was concentrated on C18 solid phase extraction column,achieving a concentration multiplication of 100 times.

研究了用亚硝基R盐离子对固相萃取光度法测定钴，在pH 6.0的HOAc-NH4OAc缓冲介质中，溴化十六烷基三甲基铵存在下，亚硝基R盐与钴反应生成3∶1稳定络合物，该络合物可用C18固相萃取小柱富集，富集倍数达100倍，小柱上富集的络合物用乙醇洗脱后用光度法测定，钴的质量浓度在0.05~5.0 mg.L-1内符合比耳定律。

Methods:In patients with ACS(n=32) and controls(n=21) the selective coronary arteriography was performed and the coronary artery stenosis scores were evaluated through accumulative total integration. Plasma concentrations of fibrinogenwere determined with hemagglutinin analysator and plasma concentrations of von Willebrand factor、 D-Dimer、 plasminogen activator inhibitor、platelet membrane glucoprotein(GMP-140) were determined with enzyme linked immunosorbent assay.

选择ACS患者32例和对照组21例进行选择性冠状动脉造影，对冠脉造影结果采用累计积分法进行冠状动脉狭窄评分；使用血凝分析仪测定受试者血浆纤维蛋白原水平，使用酶联免疫法测定外周静脉血血管性血友病因子、D-二聚体、纤溶酶原激活剂抑制物、血小板膜糖蛋白140（GMP-140）的含量。

The results show that the ore-controlling strata or source beds related to gold deposits all show high background values of gold; the gold and other associated ore-forming elem...

微量金数据除部分样品运用化学比色法外，主要采用化学浓集-发射光谱测定方法。实验结果表明，化学-光谱法测定微量金相对平均误差为18％；相对平均偏差重复性和再

The metabolite of nicotine-cotinine in urine was assayed by means of barbituric acid. Cotinine was used as an objective indicator to reflect the smoking quantity. The urinary NO (NO-2) was determined with colorimetric estimation.

用硫代巴比妥酸法测定吸烟者尿液中尼古丁代谢产物-柯替宁作为吸烟量的客观指标，用分光比色法测定尿中NO含量，来反映体内NO水平。

Methods The insecticide film was used to identify the resistance of German cockroach to four kinds of insecticides.

采用药膜法测定德国小蠊对4种常用杀虫剂的抗性水平，采用分光光度法测定酶活性。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。