lumber with★☆☆☆☆高短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 短语动词拖累；成为…的负累 The paper discusses the producing technology of resin impregnated veneer laminated lumber with high density and hardness for the purpose of manufacturing high quality gate-ball mallet. 探讨了高密度、高硬度木质层积塑料的生产工艺，旨在将这种材料用于制造优质门球棒的槌头。 chemyq