It is especially for the low strength mattess;if equipped with sand paper sheet, it aslo can be used to grind epoxy putty layer.是什么意思_It is especially for the low strength mattess;if equipped with sand paper sheet, it aslo can be used to grind epoxy putty layer.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句