查询词典 heartwood

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。

The analysis of chemical component showed that the lignin content of solid material was lower, but the carbohydrate content of solid heartwood was higher.

近年来 ，随着我国造纸工业的飞速发展，浆纸产量的不断提高，造纸用原材料尤其是木材原料越来越紧缺。

The KMnO 4 number of solid heartwood pulp was lower as the unscreened yield was a little lower.

为缓解这种局面，一些较低档次和质量的木材原料也被用于造纸。

The Heartwood Foundation has been applying for grants in hopes of raising money to expand the school.

心木中心已经申请补助，期望能够集资用来扩大学校。

Some moisture content can improve the penetrability of the compound impregnant in heartwood of Chinese fir.

在较低蒙脱土质量分数下，杉木/蒙脱土纳米插层复合材的吸湿性、吸水性、尺寸稳定性、抗水流失性、顺纹抗压强度、耐磨性、氧指数等性能均较酚醛树脂浸渍木有一定提高。

The heartwood of this tree.a tallow candle with a rush stem as the wick.

一种以灯芯草茎为灯芯的动物脂肪作成的蜡烛。

You will also notice that the inner rings, called heartwood rings, are much lighter in colour than the outer rings which are called sapwood rings.

你将会注意到里面的圆环，它的颜色比外面的环淡些，简单的说，当心材环死了

The results showed that the proportion of aspirated pits in the respective earlywood and latewood of the air_dried sapwood was increased to 99% and 81%, while that of heartwood was also as high as 97% and 86% because most of the bordered pits were aspirated at its green state.

结果表明，边材和心材的生材经气干处理后，其中边材的早材和晚材纹孔闭塞率增加至 99%和81%，而心材因为其纹孔塞在立木时就已发生偏移，其早材和晚材纹孔闭塞率亦高，分别为 97%和 86

Sometimes known as Northern White Cedar and Eastern White Cedar, the sapwood of white cedar is thin and white, while the heartwood is a light brown.

有时就像北方白宫雪松和东欧雪松。白宫雪松的边材是白色的，而日薄，而心是一种浅棕色。

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。