known sample

Also known as sirolimus, rapamycin was first discovered as a product of the bacterium Streptomyces hygroscopicus, which was found in an Easter Island soil sample.

雷帕霉素也被称作西罗莫司，最初是作为吸水链霉菌制品被发现的。该细菌来自于复活节岛的土壤样本中。

This method can determine the unknown sample types of groundwater runoff belts by the known samples with their hydrogeologic indexes and types, and is a quantitative method.

该方法可根据某地区已知的水文地质指标和类别，确定待识别样本的类别，为地下水探测提出了一种定量识别方法。

The known sample values are used to estimate the value of the next sample time, and the actual start or stop of the voltage sag are confirmed by detecting how much the actual values deviated the predict values.

利用已知的电压采样值预测下一采样时刻的电压采样值，通过检测实际值和预测值的偏差判断电压扰动的起止时刻。

〔 Methods 〕 inhibitory and appearing color system of O157: H7 selective medium is screened by growth evaluation test of known strain& unknown on-the-spot sample.

〔方法〕利用已知菌种生长评价实验和现场标本实验室评价实验，对出血性大肠杆菌O157：H7分离培养基的抑菌系统和显色系统进行筛选。

However, the first ever known sample of a visiting card, dating back to1786, was found in Germany.

不管怎样，有记录的第一张名片1786年出现于德国。

After the mass fractionation of the original Re isotope data, combined with the isotope dilution formula, the Re isotope data was obtained. The quality of the data was controlled by the known sample and international standard sample.

Re同位素数据经过分馏校正后，结合同位素稀释公式，计算出样品的Re含量和同位素组成。

But under normal circumstances, it is impossible to get the theoretical weight function by a finite number of known sample points.

但是一般情况下，通过有限个已知样本点求理论权函数是不可能做到的。

The early-warning model can distinguish the known sample data completely. After the preliminary use, the early-warning model can accurate distinguish almost the unknown sample data.

预警模型对已知的样本数据可以完全判别，在初步使用后对未知样本数据的基本判断准确。

The known sample is not large enough to determine a firm upper mass limit, which would in turn give more detailed insight into the physics of such extremely dense forms of matter.

这些已知的样本还不足以确定一个严格的质量上限，而这个上限可以帮助我们进一步了解这些极高密度的物质的物理特性。

However, the first ever known sample of a visiting card, dating back to 1786, was found in Germany.

不管怎样，人们所知道的第一个拜访卡样本－追溯到1786年－出现于德国。