水分是液压油中一种危害较大的液体污染物，严重地影响液压系统的可靠性及液压元件的使用寿命。
The moisture content in hydraulic oil is a harmful pollutant of serious consequence. It impacts substantially on the reliability of hydraulic system and the operation life of the components.
他们是坚固，可靠，提供绝对位置信息，并能工作在155摄氏度，可隔最微粒和液体污染物的过程。
They are rugged, reliable, provide absolute position information and are able to operate at 155 degree Celcius and are impervious to most particulate and liquid process contaminants.
在2009年6月至2010年4月之间，FDA报告说有46位患者投诉在液体药品中发现了不明黑色污染物。
There were 46 consumer complaints about dark material in the liquid products between June 2009 and April 2010, according to the FDA report.
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