查询词典 densification

Rutting, the most common form, consists of channelized depressions in the wheelpath which develop from densification and/or lateral movement of the mixture.

车辙是最常见的形式，是车辆通过位置处产生的带状凹槽，其因沥青混凝土混合物的稠化和／或横向运动而引起。

The experimental results show that microwave sintering promotes the densification of green compacts with higher heating rate and reduced sintering cycle. The sintered relative density of 99.8% can be achieved during microwave processing under appropriate conditions. In addition, microwave sintering improves the uniformity and homogenization of W grain size, and yet leads to growth of W grain. Fe sintering aid degrades the microstructure uniformity and further coarsens W grains. The present investigation demonstrates the feasibility of applying microwave sintering technique to consolidate W-Cu composites and its promising outlook in reducing production cycle and cost.

结果表明：微波烧结升温速度快，周期短，能促进W-Cu材料的致密化；在适当条件下，微波烧结能获得相对密度达99.8%的W-Cu样品；微波烧结能改善W-Cu样品中两相分布的均匀性和W晶粒尺寸的一致性，但引起W晶粒的快速长大；Fe烧结助剂导致W-Cu材料显微组织均匀性变差，并引起晶粒进一步粗化；微波烧结技术能够应用于W-Cu材料的制备，在缩短生产周期、降低生产成本方面具有潜在优势。

But the gas was charged early, the phenomenon that some gases were enwrapped in the specimen occurred and the densification was blocked.

由于气氛的存在抑制了液相的挥发，但过早引入气体，在气氛烧结中会产生部分气体被包裹的现象，阻碍了样品的致密化过程。

SHS/PHIP process not only increases the densification of the products, but also avoids the agglomeration and growth of ceramic grains, homogenizes the distribution of phases in products.

采用SHS/PHIP工艺制备金属陶瓷，不仅提高了产物的致密度，而且避免了陶瓷颗粒的聚集和长大，使产物中各组成相的分布趋于均匀。

According to shapes of spray deposited preforms, different densification technologies of preforms with large dimension and sheets were investigated respectively.

本文针对不同形状的喷射沉积坯料，对大尺寸喷射沉积坯料和喷射沉积板坯的致密化技术分别进行了研究。

The densification and grain growth kinetics of microwave and conventional sintered ZnO varistors were studied.

研究了微波烧结的ZnO压敏电阻的致密化和生长动力学，微波烧结温度从900～1200℃，保温时间从20min～2h。

The results shows that the flow characteristics of SiC-AlN granulated powder is obviously promoted after spray drying and a suitable particles grade match. With the increasing of pressure, the density of green body increases by the style of ladder at the pressure range of 4080 MPa, 80160 MPa and 160220 MPa, the green body is uniform and densification without hard pelleted particles above 160 MPa. The pressureless sintering SiC-AlN multiphase ceramic possesses superior sintering properties and mechanical properties. It is due to the rampart formation of AlN to SiC grain growth and the reaction of SiC and AlN to form 2H solid solution. It results in the grain fining, crack expansion producing bypass and deflection, fracture section producing tearing-open and pulling-out effects, which cooperatively improves the strength and fracture toughness of the multiphase ceramics.

结果表明：喷雾造粒后，复合粉体的流动特性显著提高，粒度级配合理；随着压强增加，坯体密度在40~80、80~160和160~220 MPa范围内呈现阶梯式增长，160 MPa以上成形后素坯均匀致密，无硬球颗粒存在；无压烧结SiC-AlN复相陶瓷具有优越的烧结性能和力学性能，这是由于AlN对SiC晶粒形成生长势垒，并反应生成2H型固溶体，从而细化晶粒，导致裂纹扩展产生了绕道与偏转效应，呈现晶粒撕裂与拨出现象，协同改善了复相陶瓷的强度及断裂韧性。

It was found that less amount of addition would be beneficial to microstructure homogenization which relates to better mechanical properties when the densification is well-achieved.

在致密化前提下助烧剂量较少时，有利于材料显微组织的均匀化和力学性能的提高。其中，ω（Y2O3）＋ω（Al2O3）＝3.5％＋1.5％为助烧剂时，断裂韧性达9.04MPa·m（1／2）。

The densification and molding technology of biomass compress a variety of dispersing and irregular-shaping agriculture and forestry waste by drying and crushing, and under certain conditions, into regular-shaped and high-density solid fuels with the shapes of rod-like, massive or granular; also into high-quality feed for livestock.

生物质致密成型技术是将各种分散的，形状不一的农林废弃物经乾燥、粉碎后，在一定条件下，挤压成规则的、高密度的棒状、块状或颗粒状的固体燃料，同时也能做为优质饲料供给牲畜。

For the powder having burn out process, the densification of the films is higher under carrier gases Ar,O2,N2. The surface roughness also increases with increasing gas flux.

初始粉末经烧除后镀制之厚膜结构，以Ar，O2或N2携带气体下最为致密，且膜厚及表面形态差异并不大，可发现较为平整之膜面，但随著流量的提升，表面的粗糙度则会增大。

I had a lovely dog named PiPi, he was one of my best friends.

我曾经有过一只小狗，它的名字叫皮皮，它很善良，它是我最忠实的朋友。

Newly ovulated mouse oocytes were cultured in the CZB medium supplemented with different concentrations of pyruvate before treated for activation or assayed for MPF activity.

我们猜测卵母细胞在不含丙酮酸的条件下老化的更快，并且卵丘细胞可能通过消耗不含葡萄糖的CZB中的丙酮酸从而促进卵母细胞老化。