查询词典 pressureless

SiC/Al composites were prepared with pressureless infiltration method. Using pin on disk tribometer, the influence of volume fraction and particle size of SiC on dry friction and wear properties of the SiC/Al composites were investigated. The wear mechanism of the composites was studied with the analysis of the worn surface by SEM.

采用无压浸渗法制备不同碳化硅粒度和体积分数的SiC/Al复合材料，利用销－盘摩擦磨损试验机考察了碳化硅的粒度和体积分数等对SiC/Al复合材料干摩擦磨损性能的影响，采用扫描电子显微镜观察磨损表面形貌并分析其磨损机理。

Shell Cassida Fluid HT 32 is a synthetic heat-transfer fluid for close d circuit and pressureless heat transfer systems.

壳牌加适达HT 32润滑油是一种用于闭路循环和无压热传导系统的合成热传导润滑油。

Shell Cassida Fluid HT 32 is a synthetic heat-transfer fluid for closed circuit and pressureless heat transfer systems.

壳牌加适达HT 32润滑油是一种用于闭路循环和无压热传导系统的合成热传导润滑油。

Five synthesis methods of AlN powder were discussed, namely direct nitrogenation of Al powder, carbothermal reduction of Al2O3, chemical vapor deposition, sol-gel method, self-propagating high-temperature synthesis and plasma chemical synthesis. The choice of AlN sintering additives and five sintering technologies were analysed, namely hot pressing sintering, pressureless sintering, spark plasma sintering, microwave sintering and self-propagating sintering. The preparation processes of AlN substrate and its influencing factors were expounded.

介绍AlN陶瓷的典型性能和导热机理；讨论AlN粉末的5种合成方法：铝粉直接氮化法、Al2O3碳热还原法、化学气相沉积法、溶胶凝胶法、自蔓延高温合成法和等离子化学合成法；分析AlN烧结助剂的选择和5种烧结工艺：热压烧结、无压烧结、放电等离子烧结、微波烧结及自蔓延烧结；阐述AlN基板的制备工艺及其影响因素。

And since they are pressureless, you don't have to worry about them going flat.

而且因为它们是低压，你不必担心他们弹跳太直。

Pressureless sintering technique was used to prepare the composites.

本研究以无压烧结的方式制备复合材。

The current status of pressureless infiltration technique at home and abroad is reviewed.

综述了无压浸渗工艺的国内外研究现状以及顺利完成此工艺的前提。

A pressureless permeating method is put forward.

提出用无压渗透法制备铸造表面复合材料的新方法。

The mechanical properties of B4C/Al composite prepared by pressureless infiltration technology were tested.

对无压浸渗法制备的B4C/Al复合材料进行了力学性能测试。

First of all, three kinds of Si〓N〓 ceramics with different microstructure and mechanical behaviour were made by use of pressureless sintering.

首先，利用常压烧结，制备了三种显微结构不同、力学性能各异的Si〓N〓陶瓷。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。