Analyze for chlorion in free water, water cut and sand content in the crude oil.

测定游离氯根，做原油含水及含砂分析。

The sedimentation analysis method was used for measuring the sand content of settleable solid in wastewater.

应用物理化学分析中的沉降分析法对污水水体内可沉固体中含砂率进行测定。

When drill hole in sandy soil the desander should be timely turned on to reduce the sand content and ensure the drilling progressing and stability of the hole.

在砂土层中钻进时，要及时开启泥浆分离器，降低含砂率，保证钻进速度和孔壁的稳定。