心材

What can be said about the range of dates of the last heartwood rings?

怎样描述最后的心材环的日期范围。

A raw material obtained from the heartwood of this plant, used in the preparation of tannins and brown dyes.

儿茶从这种植物的心材中提取的原料，用于生产单宁酸和棕色染料

Any of several small to medium-sized trees of Florida and West Indies with thin scaly bark and heavy dark heartwood.

任何一种小到中等尺寸的树种，生长在佛罗里达和西印度，有薄的鳞状树皮和重的黑色的心材。

A raw material obtained from the heartwood of this plant,used in the preparation of tannin s and brown dyes.

儿茶从这种植物的心材中提取的原料，用于生产单宁酸和棕色染料

A raw material obtained from the heartwood of this plant,used in the preparation of tannins and brown dyes.

儿茶从这种植物的心材中提取的原料，用于生产单宁酸和棕色染料厨房正在准备饭菜。

Heartwood and so on.it is used in biochemistry and organic chemistry research.

心材等。用于生物化学及有机化学研究。

The pure essential oil is produced from steam distillation of the roots and heartwood.

纯的檀香精油是由水蒸汽蒸馏法由心材及根部而得。

Many plants accumulate tannins, particularly in leaves, fruits, seed costs, bark, and heartwood.

许多植物都会积累鞣质，尤其是在叶片、果实、种皮、树皮和木材之中的心材之类的地方。

In the heartwood of the old trunks, there is ample oak tannin and aromatic materials of oak, which ensures the quality of the oak products.

这种老树干的心材中，含有丰富的橡木单宁和橡木的芳香物质，是保证橡木制品质量的关键所在。

Small genus of tropical African timber trees having pale golden heartwood uniformly striped with dark brown or black:.

有苍白金黄的心材并均一带有棕黄或黑色的条纹的热带美国木材乔木的小属。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。