精密度

Methods According to the AQC procedure of analysis water quality evaluated precision and accuracy of colorimetric method.

按水质分析中评价比色法精密度和准确度的 AQC工作程度进行。

The molar ratio of sulfate ions to carboxylate ions is determined by conductometric titration method and the molecular weight is tested by high performance gel permeation chromatography. The precision of these two methods is also studied. To improve the detection sensitivity, guanidine hydrochloride is used as the best derivation reagent of 911. A systematic research is done on the optimum derivatization condition of 911 and Guanidine hydrochloride. The M /G ratio of 911 has direct relation to its biological activity.

论文首先对911的基本理化性质进行了系统的分析，以电导滴定法和高效凝胶渗透色谱法分别测定了分子中硫酸根羧酸根的比值和911的分子量，并探讨了两种分析方法的精密度。911分子没有紫外吸收，为提高检测灵敏度，本文采用荧光标记法，通过对三种荧光试剂与几种寡糖和多糖衍生效果的综合比较，最终确定了盐酸胍为最佳衍生试剂，并以911为代表详细探讨了衍生化反应的最优条件。911糖链结构与褐藻胶主链结构类似，以甘露糖醛酸和古罗糖醛酸的嵌段形式存在，分子中M/G比值与911的物理化学性质和生物活性有直接关系。

The precision and accuracy of 3D rendered images craniofacial measurements was calculated.

计算三维体绘制图像线性距离的精密度和准确度。

Scientific and rational design, high-precision assembly, so that each Dama Ji factory pass rate reached 100 percent quality assurance.

科学合理的设计，高精密度的装配，使每台打码机出厂合格率达到100%的质量保证。

The precision, linearity, anti -interference ability, recovery rate were compared among the 4 methods according to the standard method of NCCLS, and relativity between each of the 4 methods and modified diazotate J - G was calculated. Results

结果改良化学氧化法、钒酸氧化法、胆红素氧化酶法的批内精密度均小于3.0％；4种方法的回收率均在95.0％～105.0％之间；KHC3法、改良化学氧化法、钒酸氧化法和胆红素氧化酶法的线性范围分别是：0～424μmol／L、0-675μmol／L、0-629μmol／L、0-575μmol／L；胆红素氧化酶法和改良化学氧化法均有较强的抗干扰能力，和改良J-G法的测定结果有高度一致性。

Methods: water decocting method for extracting method, ether as extraction solvent with high performance liquid chromatography, as the means, to test content of methanol 0-3 % diethylamine (73:27) as mobile phase, 242nm detected wavelength, according to the packing: Hypersil BOS C18 5 muon m size: 6 mm (4): 25 mm, standard curve basic linear, precision, accuracy, good stability and.

以水煎煮法作为提取方法，乙醚作为萃取溶剂，以高效液相色谱作为含量检测的手段，以甲醇-0。 3 %二乙胺(73∶27)作为流动相，检测波长242nm，依利特填料：Hypersil BOS C18 5μm 尺寸：4。 6 mm ×250 mm ，结果：标准曲线基本呈线性，精密度，稳定性和准确度良好。

High performance liquid chromatography-photodiode array detection-elctrospray ionization mass spectrometry (HPLC-PAD-ESI-MS) method was used to determine secoisolariciresinol diglucoside qualitatively and quantitatively. Precision, stability, limits of quantification, SDG recovery and sample preparation method were studied.

采用高效液相色谱－二极管阵列检测－电喷雾质谱(HPIC-PAA-ESI-MS)法对开环异落叶松树脂酚二葡萄糖苷进行定性和定量检测，研究方法的精密度、稳定性、定量检测限及加样回收率，并考察样品制备方法对定量检测结果的影响。

To produce specialty tubing, this procedure uses a drawbench to pull tubing through a die and ove

为了制造出更精密的管子，这一程序通过拔管机使管子经过钢型和心轴的拉制，这样管子的内径和壁厚精密度就能控制的很好。

To produce specialty tubing, this procedure uses a drawbench to pull tubing through a die and over a mandrel, allowing excellent control of the inside diameter and wall thickness.

为了制造出更精密的管子，本工艺通过拔管机使管子经过钢型和心轴的拉制，这样管子的内径和壁厚精密度就能控制的很好。

To produce specialty tubing, this procedure uses a drawbench to pull tubing through a die and over a mandrel, allowing excellent control of the inside diameter and wall thickness.

为了制造出更精密的管子，这一程序通过拔管机使管子经过钢型和心轴的拉制，这样管子的内径和壁厚精密度就能控制的很好。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。