It is applies to various researching and industry environment: water treatment plant, deep well reservoir, ocean, river, oil tank, coal washing plant and tank restored mushy or slurry.
适用于各种研究和工业环境；水处理厂、深井水库、海洋、河流、储油罐、洗煤厂、装有糊状或泥浆的罐。
The charging of a condenser from a battery is not unlike the filling of a tank from an oil reservoir.
电池给电容器充电就象油灌给油箱加油一样。
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