在木材商品上常把树种分为硬材与软材。针叶树材称为软材;阔叶树材称为硬材。一般的软材树种固然比一般的硬材为软。但也有很多树种,如红豆杉、铁坚杉虽然属于软材,可它的坚硬程度不亚于一般硬材,即使与坚实的硬材相比也不相上下。又如杨木、泡桐、巴塞木虽然属于硬材,但它们比一般软材还软。因此,硬材与软材,只不过是代表木材是针叶树材或是阔叶树材,在木材本身的软硬程 In the wood products often divided into hardwood and soft wood species. Coniferous wood is called soft wood; hardwood wood is hardwood. Although the average soft wood species than the average hard material is soft. But there are many species, such as yew, iron fir, although it is soft, but its hardness is no less than the average hardwood, even compared with solid hardwood. Another example is poplar, Paulownia, Basset wood although hardwood, but they are also softer than the average soft. Therefore, hard and soft wood, timber is only representative of softwood or hardwood trees, in the wood itself, the soft and hard