标准测定

The weight correction factors of toluene and its nitro derivates on flame ionization detector are determined by using n heptane as a standard.

采用正庚烷为标准物质，测定了甲苯及其硝基衍生物在火焰离子化检测器上的重量校正因

It has been used to determine copper ion in waste water samples from hydrometallurgy of copper. The relative standard deviation (n=8) for the determination results of two samples were 0.8% and 1.4% and the recovery were 101% and 100%, respectively.

该离子选择性电极已用于湿法冶金废水中Cu(上标 2+)的分析，两个样品测定结果的相对标准偏差(n=8)分别为0.8%和101%，加标回收率分别为101%和100%。

All of these as a standard grade quickly and impersonally for cereal quality .

本文利用计算机视觉技术对原粮几何属性和色泽属性的检测做了有益的探讨，提出了建立标准原粮矢量数据库，实现客观和快速地测定原粮品质等级。

Methods: Based on the value added and the absorbance of the sample in the beer into lead series solution, increasing the absorbance values, enhance the sensitivity of the method, the direct determination of lead content in beer was performed.

依据吸光度值的加和性，在啤酒样品中加入铅标准系列溶液，增大吸光度值，提高方法的灵敏度，直接测定啤酒中铅含量。

And no research reports were seen on the comparison between the effect of potassium iodate and iodine on thyroid function and morphology.

采用中华人民共和国卫生部行业标准规定的方法测定尿碘中位数，观察各组Wistar大鼠碘营养状况。

In this study, a novel method based on the fading of isatin is proposed to determine the glucose oxidase activity.

利用靛蓝胭脂红褪色分光光度法测定葡萄糖氧化酶催化葡萄糖溶液产生的过氧化氢浓度，经过标准曲线转换得到葡萄糖氧化酶的活力。

The contents of barium in two lapis lazuli samples were determined with this method, and RSD was 1.37% and 1.72%, respectively.

用本方法测定两个天青石样品中钡，相对标准偏差分别为1.37%和1.72%。

The relative standard deviations of the peak area of analytes are less than or equal to 3.2%.

测定结果的相对标准偏差都在3.2%以下，样品加标回收率在94%~103%之间。

Error causes are analyzed,and it is recommended that the 2′ could be used as the accuracy standard for civil user at present,when measuring zenith distance based on the direction of gravitational force line.

分析了误差产生的原因，建议以重力线作基准直接测定天体顶距时，近期民用设备可用2′作为标准，理论分析和实验表明，这样可降低仪器造价和对测者的要求，天文定位仍可获得满意的结果。

The method is right tall lipemia group (81) contrast with normal blood fat group (65), with analysis of appearance of gas phase color atlas all sorts of armour ester change the content of fatty acid of plaque phosphatide film, determine with standard method the thrombosis in blood endangers factor, serum is the same as model half Guang ammonia is acerbity and element of 11- dehydrogenation thrombus B2(TXB2), analyse the dependency between both with multivariate and linear regression.

方法对高脂血症组(81例)和正常血脂对照组(65例)，用气相色谱仪分析各种甲酯化血小板磷脂膜脂肪酸的含量，用标准方法测定血液中血栓形成危害因子，血清同型半胱氨酸及11-脱氢血栓素B2(TXB2)，并用多元线性回归分析二者之间的相关性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。