A downside is that redwood is a soft, low-density material, so thicker lumber must be used to ensure a wall is strong enough to do the job.
不利的一面是，红木是一种柔软，低密度的物料，因此厚木材必须使用，以确保墙强大到足以完成工作。
Although its visual effect is so pronounced, dust is only a minor constituent of the material, extremely low in density, that lies between the stars.
尽管它的视觉效果如此显著，但尘埃只是位于恒星之间的物质的一个次要组成部分，其密度极低。
Its low density has led scientists to speculate that it may consist of porous, icy material.
土卫十六密度较低，科学家因此推断它可能由多孔冰物质构成。
The use of pulsed high energy density plasma is a new low temperature plasma technology for material surface treatment and thin film deposition.
脉冲高能量密度等离子体是一项全新的等离子体材料表面处理和薄膜制备技术。
But that results the high void ratio, low density, hardness, and quality bulk material.
但是采用此方法所制得的块体材料致密度小，孔隙率高，硬度值较低，性能较差。
The invention discloses a polypropylene material with low density, high rigidity and scratch resistance and a preparation method thereof.
本发明公开了一种低密度、高刚性、耐刮擦的聚丙烯材料及其制备方法。
SOG material, as traditional SOI material, has much excellent electronics property, for example, SOG circuit has the advantage of high switch speed, high density, low voltage, low power and so on.
SOG材料与传统SOI材料一样，拥有许多优良的电学性能，例如SOG电路具有高开关速度、高密度、低压和低功耗等优点。
In the material with relatively low cross-linking density, extensive fracture process stripe is formed which is induced by the combined stress field near the rubber particles.
在交联密度较低的材料中，在橡胶颗粒附近叠加的应力场诱发下发生纵深度较大的断裂过程。
The Zn-Al alloy has many advantages, such as good mechanical property, strong antifriction property, processable property, small density, low melting point, affluent raw material, low cost and so on.
高铝锌基合金具有优良的力学性能、耐摩性能、机加工性能、以及密度小、熔点低、原材料来源丰富和成本低等优点。
The density measurement technology of foam material with low atomic number was established by low energy X-ray radioscopy .
采用低能X射线对低原子序数泡沫样品进行透射照相，以胶片作为记录介质，对材料密度进行测量。
The bi layer structural carbon cluster like microwave stealthy material coating was designed and prepared by making use of low density carbon cluster like material.
通过微波隐身材料结构设计，采用密度较小的碳团簇型原料，制备得到了具有良好吸波性能的双层结构碳团簇型微波隐身涂层材料。
As a good thermal material with super-low density, microsphere is often used to prepare light-weight cement slurry.
漂珠是优良的耐热超低密度材料，常用作配制低密度水泥浆。
The foamed ceramic material with high open porosity is characterized by low apparent density , high permeability, and resistance to high temperature and chemical corrosion.
泡沫陶瓷具有密度小、透气性高、耐高温、抗化学腐蚀等特性。
The metallic material has the characteristics of small density, high low temperature resistance, good plasticity, large mechanical strength, and good acid-alkali corrosion resistance.
本发明所述其金属材料具有密度小、耐高低温、塑性好、机械强度大、抗酸碱腐蚀性好的特性。
We have succeeded in making a kind of phase change material (PCM) of high thermal storage density, good corrosion-resistant performance and low cost of preparation by powder sintering method.
本研究采用粉末烧结工艺将陶土分别同性能优良的高温熔融盐复合，成功地制备出蓄热密度高、耐腐蚀性好且成本低廉的相变蓄热复合材料。
Hypereutectic Al-Si alloy with the quality of low density, good heat stability and high wear-resistance, is an ideal wear-resistant and heat-resistant material.
过共晶铝硅合金具有低密度、良好的热稳定性和高耐磨性，是一种理想的耐磨耐热材料。
As the improvement of the invention, the raw material of the plastic membrane also comprises 10 to 25 weight portions of metallocene catalyst for liner low density polyethylene.
作为本发明的改进，所述塑料薄膜的原料还包括按重量计的10 ~25份用于线性低密度聚乙烯的茂金属催化剂。
The polyolefin base material is preferably 55 to 65 weight portions of liner low density polyethylene and 15 to 25 weight portions of low density polyethylene.
所述聚烯烃基料优选为按重量计的线性低密度聚乙烯55 - 65份和低密度聚乙烯15 ~25份。
The manufacturing method mainly comprises the following steps: A). cutting blanks of the low-density wood fiber fast-growing solid wood base material according to the floor specification for use;
其制造方法主要是：A）、先按照地板规格，将低密度木纤维的速生实木基材胚 料分割，备用；
The manufacturing method mainly comprises the following steps: A). cutting blanks of the low-density wood fiber fast-growing solid wood base material according to the floor specification for use;
其制造方法主要是：A）、先按照地板规格，将低密度木纤维的速生实木基材胚 料分割，备用；
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