To the ground with much hollowing and holes, you should fill and repair it with epoxy resin paste or epoxy lacquer putty and then do the next operation.
对于有较多凹陷、坑洞地面，应用环氧树脂砂浆或环氧腻子填平修补后在进行下一步操作。
To the ground with much hollowing and holes, you should fill and repair it with epoxy resin paste or epoxy lacquer putty and then do the next operation.
对于有较多凹陷、坑洞地面，应用环氧树脂砂浆或环氧腻子填平修补后在进行下一步操作。
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