| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the formation of an iron bacteria biofilm in an underground structure at a place with spring water or a water leakage. Ž<P>SOLUTION: Silicone grease used as a water repellent material for increasing the flow-down speed of flowing water is smeared to the place where water flows due to the spring water or water leakage to prevent the formation of the iron bacteria biofilm. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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