查询词典 thermal stability

The conventional hydrophilic polymers such as poly and cellulose acetate are usually poor in thermal stability and chemical resistance.

另一方面，通过表面接枝亲水性链段的改性方法稳定性不高，成本较昂贵，不易于工业化生产。

The effect of crystallization process from polymers, control laws of particles from the long-chain structure of polymer, as well as the self-assembly regulatory mechanism of nano-particles from polymer are investigated , through the control of its morphology and properties of precursor order to get large aperture, high specific surface area, has good thermal stability and catalytic cerium oxide particles.

研究聚合物对结晶过程的影响、聚合物的长链结构对粒子自组装的控制规律以及聚合物对纳米粒子自组装的调控机理，通过控制其前驱体的形貌和性能，以期得到大孔径、高比表面积、具有良好的热稳定性及催化作用的氧化铈颗粒。

The thermal stability of the end-capped copolymers is improved after inletting chloromethane gas under certain conditions.

采用一氯甲烷对共聚物进行封端，封端后聚合物的10%的热失重有所上升。

The relationship between the thermal stability and chloroplast in plant.

植物抗热性与叶绿体的关系。

In recent years, as automobiles, machinery, aviation, aerospace and chemical industry have developed in the direction towards high performance, low power consumption and long life, general rubber such as nature rubber, chloroprene rubber, and acrylonitrile butadiene rubber etc can not satisfy thermal stability and oil resistance in new rubber products.

近年来，随着汽车、机械、航空、航天、化工等领域使用的橡胶制品向高性能、低能耗和长寿命方向发展，天然橡胶、氯丁橡胶、丁腈橡胶等通用橡胶已无法满足新型橡胶配件耐高温和耐油等方面的要求。

In this paper, three kinds of hydroxyl component are prepared for two-component waterborne polyurethane paint, that is, acrylic dispersion, acrylic emulsion and silicone-modified acrylic emulsion. The influence of the composites of these dispersion and emulsions on polymerization process, viscosity, particle size and coagulum are investigated, infrared spectroscopy , inductance coupling plasma , transmission electron microscopy and thermogravimetric analysis are used to characterized their structure, composite, morphology and thermal stability, respectively.

本论文制备了三种用于水性双组分聚氨酯涂料的含羟基组分，即丙烯酸分散体、丙烯酸乳液和有机硅改性丙烯酸乳液，研究了这些分散体和乳液在制备过程中聚合物的羟值、酸值、玻璃化温度、乳化剂、反应温度等对聚合转化率、凝聚物含量、聚合物粘度和粒径的影响，用红外光谱、热重分析、透射电镜和感应偶合等离子技术表征了其结构、组成、形态和热稳定性。

This is the cause that NdDyFeBSn magnet has a better thermal stability of coercivity above 150℃.

这就是在150℃以上，NdDyFeBSn合金的矫顽力热稳定性优于NdDyFeB的原因。

Increasing the selective reduction ability of NOx under lean burning condition, enhancing the thermal stability and decreasing the light-off temperature of the catalysts are the three key researching hot points in the area. And quality of the honey comb g-Al2O3 coatings, additives and the preparation parameters are the major effectors of the catalytic activation of the catalysts.

目前对单钯三效催化剂的研究的热点和难点在于：1 提高催化剂对氮氧化物的选择还原能力； 2 增强催化剂的高温热稳定性；3 降低催化剂的起燃温度。g-Al2O3 性能质量，助催化剂的选择及用量，涂层及催化剂的制备工艺等对单钯三效催化剂的催化活性起决定性作用。

Increasing the selective reduction ability of NOx under lean burning condition, enhancing the thermal stability and decreasing the light-off temperature of the catalysts are the three keyresearching hot points in the area. And quality of the honey comb g-Al2O3 coatings, additives and the preparation parameters are the major effectors of the catalytic activation of the catalysts.

目前对单钯三效催化剂的研究的热点和难点在于：1 提高催化剂对氮氧化物的选择还原能力； 2 增强催化剂的高温热稳定性；3 降低催化剂的起燃湿度。g-Al2O3 性能质量、助催化剂的选择及用量、涂层及催化剂的制备工艺等对单钯三效催化剂的催化活性起决定性作用。

Thereafter B-A1 paste-layer diffusion technology and close-tube Ga-diffusion technology had been developed, while the former can lead to relatively large the base-region deviation and abruptly varied region in Si, which caused severe decentralization of current amplification parameter β, bad thermal stability and high tr; the latter needed the relatively difficult pack technique, with poor repeatability , high rejection ratio, and poor diffusion quality and production efficiency.

此工艺发明以来，克服了上述两者的弊端，杂质浓度和结深能准确控制而又能任意调整，可进行低、高浓度阶段性掺杂，得到元素Ga在Si中的理想分布，而且表面浓度均匀一致、重复性好、合格率和优品率高，改善和提高了器件的综合性能。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。