Thus, the balsa wood (Ochroma lagopus) , which is lightweight, porous and similar to the aerogel could be treated to a kind of aerogel which possess natural wood characters after chemical, physical and supercritical treatments.
因此,可以探索将轻质、多孔、满足气凝胶材料的基本条件的天然木材—轻木,通过化学、物理等手段处理再经超临界单元操作,将其制备成为天然木材属性的气凝胶材料,以期提供一种高韧性低密度的气凝胶材料,代替某些人工合成的气凝胶材料在某些特殊领域发挥作用,则利于实现木材的高附加值利用。
a light raft made of balsa.
用轻质木材制成的筏。
forest tree of lowland Central America having a strong very light wood; used for making floats and rafts and in crafts.
中美低地森林树种，坚硬的轻质木材；用作船和筏以及手工艺品的制作。
Study on Lightweight Composited Electromagnetic Shielding Materials of Wood with Electroless Copper
化学镀铜木材轻质电磁屏蔽复合材料的研究
New Light Furniture Material-Development of Composite Board Made of Wooden Material with Enhanced Composite Honeycomb Paper Core
新型轻质家具材料-木质材料强化蜂窝纸芯复合板的研制
Australian timber tree resembling the kauri but having wood much lighter in weight and softer.
类似于澳洲贝壳杉，但比其木质更轻、更软，可作木材。
Balsa is a light wood.
西印度轻木是一种很轻的木材
Also, the feasibility of manufacturing UL-MDF using China fir-thinning as raw material was discussed.
研究探讨了利用杉木间伐小径材为木材原料生产超轻质中密度纤维板的可行性。
Any of several trees of the genus Calophyllum, of southern Asia, having light, hard wood used for masts and spars.
胡桐胡桐属各种树木，产于亚洲南部，其木材质轻而坚硬，用于船桅和船柱
shrub or small tree of southeastern United States having soft light brown wood.
美国东南部的一种灌木或小乔木,木材褐色,轻软。
Originally such towers would have been made of lighter materials, such as timber; with time and increasing technical sophistication, masonry towers were preferred.
最初这种塔由较为轻质的材料建造，如木材；随着时间流逝以及技术水平的发展，石塔成为了首选。
a thin layer of superior wood glued to a base of inferior wood.
一种胶合在劣质木材上的优质薄木板。
Decoration,furniture,wood carving,handles,joinery and inlaid work.
装饰材﹐唐木家俱﹐雕刻木艺品﹐木质手把﹐细木器。
Ironwood doesn't float.
坚质木材不浮於水面上。
If you compare wood with plastics, the latter is lighter.
如果你把木材同塑料相比，后者较轻。
Concrete, whether ordinary or lightweight, has for some time been the principal material used for producing prefabricated units, both for buildings and civil engineering projects.
一段时间以来,普通或轻质混凝土一直是用于房屋和土木工程建筑预制构件生产中的主要材料。
Study on Conversion of Lignin to Lah by Catalytic Pyrolysis;
木质素催化热解转化轻质芳烃的研究
West Indian timber tree having very hard wood.
西印度群岛的一种木材,木质非常硬。
timber tree of western North America yielding hard light wood; closely related to the red ash.
北美洲西部的成材乔木，出产硬而轻的木材；与洋白蜡树密切相关。