精密度

The Ultraviolet absorption wavelength, standard curve, recovery and accuracy were studied by Ultraviolet spectrophotometer and HPLC.

用紫外分光光度计和高效液相色谱仪，对其紫外吸收波长、标准曲线、回收率和精密度等进行研究。

That the strategy needing to pay attention to whose product mix especially first is adjusted, makes structure complicated , the high accuracy top grade mould gets quicker development in the mould industry development on the days to come.

模具行业在今后的发展中，首先要更加注意其产品结构的战略性调整，使结构复杂、精密度高的高档模具得到更快的发展。

This method had better specificity,fine precision and hgih accuracy rating.

结论该方法专属性强、精密度好、测定结果准确度高。

The positive titer with reference sample was 1 ∶ 1 600. The precision was lower than 10%.

灵敏度参考品的灵敏度为1∶ 1 600，精密度参考品的精密度＜10%。

The method is used to preconcentrate Li and separate matrix in geological samples, and contents of Li in those samples determined by ID-ICP-MS, giving precise of 3% and good accurate results.

分离后 ，用 ICP-MS测定锂同位素的比值，具有较高的测量精密度。用同位素稀释电感耦合等离子体质谱测定地质样品中微量锂，结果相对标准偏差 sr%。方法检出限低，精密度高，分析速度快，是测定锂的较理想方法。

The quantitation was performed with deuterated N-nitrosodiethanolamine as internal standard. The limit of quantitation for N-nitrosodiethanolamine was 50 μg/kg. The mean recoveries were 89.1%~98.2% at the spiked levels of 50~250 μg/kg, with the intra-day precision less than 9% and the inter-day precision less than 11%.

NDELA的方法定量限为50 μg/kg；在50-250 μg/kg的3个添加水平范围内的平均回收率为89.1%～98.2%，日内精密度均小于9%，日间精密度均小于11%。

Qualitative and quantitative analyses were carried out for the analyte under the multiple reaction monitoring mode after the chromatographic separation on a Waters Atlantis T3 column (150 mm×2.1 mm, 3 μm). The quantitation was performed with deuterated N-nitrosodiethanolamine as internal standard. The limit of quantitation for N-nitrosodiethanolamine was 50 μg/kg. The mean recoveries were 89.1%-98.2% at the spiked levels of 50-250 μg/kg, with the intra-day precision less than 9% and the inter-day precision less than 11%.

NDELA经waters Atlantis T3色谱柱(150mm×2.1mm， 3μm)分离后在多反应监测模式下进行串联质谱定性及定量分析，以d8-NDELA为内标定量NDELA的方法定量限为50μg/kg；在50~250μg/kg的3个添加水平范围内的平均回收率为89.1%~98.2%，日内精密度均小于9%，日间精密度均小于11%。

The flow rate was 1.0 mL.min -1 and the detection wavelength 278 nm. Results The average recoveries for harpagosicle and cinnamic acid were 100.4% and 97.2% with RSD 1.27% and 2.36%(n=6), respectively.

结果 哈巴俄苷的平均回收率为100.4%，方法精密度RSD为1.27%（n=6）；肉桂酸的平均回收率为97.2％，方法精密度RSD为2.36%（n=6）。

To analyze the reliability and comparability of different hematology analyzers and to standardize the operation of a contrast test. Methods The carryover rate, precision, total precision and percentage of differences of hematological analyzers were evaluated and differences of items in whole blood were compared by detecting 20 anticoagulant fresh blood samples based on the documents of ICSH and NCCLS. Every 3 blood samples of highvalue, middlevalue and lowvalue were detected by hematological analyzers everyday for 7 days.

方法参照国际血液学标准化委员会及美国临床实验室标准化委员会文件，在仪器正常运行的情况下，评价各比对仪器的携带污染率、精密度和总精密度、差异百分率；分析比较20份抗凝新鲜全血中各项指标在不同血细胞分析仪之间的差异；每日取高、中、低3份新鲜血，在各仪器上平行检测，连续比对7日，观察各项指标与参考样机之间的相关性；分析比较仪器分类与手工分类的相关性；通过直线回归方程计算相对偏差，估计每台仪器各检测指标的试验误差。

Methods refering to the document announced by the international hematology standardization committee icsh in 1984, the accuracy, the intra and inter-assay precisions and the height mutually dyeing rate of the analyzers were compared by determinaiton of wbc, rbc, hb, hct, plt of the standard whole blood samples from 20 subjects.

根据1984年国际血液学标准化委员会icsh公布的关于自动血细胞计数仪评价的文件，用标准全血质控液以wbc、rbc、hb、hct、plt 5个测试项目评价sysmex t-2000i、sysmex kx–21n和beckman coulter act diff2 三型血细胞分析仪的批内精密度、批间精密度、高低互染率等指标，然后比较20份患者新鲜全血样本在三型仪器上的测定数据。

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。