Core rockfill dam including impermeable wall, the filter layer, layer, the main rockfill districtand sub-district rockfills.是什么意思_Core rockfill dam including impermeable wall, the filter layer, layer, the main rockfill districtand sub-district rockfills.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句