求翻译：2、碳只需以一种标样定标一次即可。为可靠起见，在仪器第一次使用时，应用几种标样检查一下仪器的精度是否满足要求，如不满足要求，应检查管路是否有漏气、积液、阻塞、碱石灰失效等问题。硫可用一个接近被测试样的标样定标。为提高精度（需测量较大范围时）也可用几种标样验证。是什么意思？

2, carbon only in a standard sample calibration once. To be reliable, the first use of the instrument, the application of several standard sample to check the accuracy of the instrument meets the requirements, such as does not meet the requirements, check the pipeline for leakage, fluid, obstruction

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2nd, the carbon only must calibrate one time by one kind of standard sample then.In order to for reliable, when instrument first use, applies several kind of standard samples to inspect the instrument the precision whether satisfies requests, like does not satisfy the request, should inspect the pip

2 in a standard calibration, carbon only once. For the sake of reliability, the instrument for the first time you use, some sample checks whether the accuracy of the instrument to meet the requirements, if he does not meet the requirements, you should check the pipeline leak, effusion, obstruction,

2 in a standard calibration, carbon only once. For the sake of reliability, the instrument for the first time you use, some sample checks whether the accuracy of the instrument to meet the requirements, if he does not meet the requirements, you should check the pipeline leak, effusion, obstruction,