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本文继今年第5期《小议化工标准中的称量》一文的内容,对称量句子的描述及如何设定化学分析中称样量和称量准确度等问题再进行一些探讨。一、关于化工标准中有关称量句子的描述上文已经指出,化工标准中称量物料的句子应给出称样量和称量误差,称量误差也即称量准确度。根据上文,句中的称量准确度指的是置信概率取95%(±2δ)时测量值与真值相符合的程度。而句中的称样量应根据实际要求给出确定量或给出近似量,因此称量句子有以下几种句型。
This article follows the fifth issue of this year, “On the weighing of chemical standards,” a paper on the description of the weighing sentence and how to set the chemical analysis of the sample volume and weighing accuracy issues such as some further discussion. First, on the chemical standards in the weighing sentence description Above has pointed out that the chemical standard weighing materials should be given the sentence weighed sample and weighing error, weighing error that is weighing accuracy. According to the above, the accuracy of the sentence in the sentence refers to the degree to which the measured value coincides with the true value when the confidence probability is taken as 95% (± 2 δ). The sentence in the sample size should be given according to the actual requirements of the given amount or given an approximate amount, so the sentence has the following sentence patterns.