The laboratory detected arsenic in the water sample.

实验室在水样中检测到了砷。

Scientists found a trace of pollutants in the water sample.

科学家在水样中发现了微量的污染物。

The scientist measured the phosphate levels in the water sample.

科学家测量了水样中的磷酸盐含量。

The scientist measured the phosphorous content in the water sample.

科学家测量了水样中的磷含量。

The scientist discovered a pathogenic bacterium in the water sample.

科学家在水样中发现了一种致病细菌。

The presence of the chemical was detectable in the water sample.

在水样中可以检测到这种化学物质的存在。

The scientist used a millipore filter to purify the water sample.

科学家使用密理孔过滤器来净化水样。

We need to measure the electrical conductivity of the water sample.

我们需要测量水样的电导率。

The scientist used a hydrometer to check the purity of the water sample.

科学家使用测量液体密度的仪器来检查水样的纯度。

The collection methods for water sample containing phosphorus are compared.

对元素磷水样的采集方法进行了比对；