10x60x300 mm. lamparquet14x75x400 to 600 mm. lamparquet15x90x650 to 1250 mm. lamparquett&g Grades required areA (quarter and semi-quarter sawn)B( flat sawn)以上是关于地板的语段话,我有些翻译不明白,请高手帮忙翻译一下哈!