The improved injection mold technology and talc filler are of help to increase die arc resistance of the composites. 另外改变加工工艺或添加滑石粉也可提高材料的耐电弧性。
Objective the Yenan separation leather blue negative bacillus the mold mushroom spawn distribution and its to the commonly used antibiotics drug resistance which infects in the hospital. 目的监测延安市革兰氏阴性杆菌在医院内感染的菌种分布及其对常用抗菌药物的耐药性。
Model and Application of Fungicide Resistance Management in Tomato Gray Mold Control in Greenhouse Resistance Management to Cotton Aphids and Cotton Bollworm in Shanxi 保护地番茄灰霉病抗药性治理策略的理论模型与实践山西省棉蚜、棉铃虫抗药性治理对策及应用研究
Neither external mold release agent nor the post curing of the moulding parts for Nylon RIM system is needed. The Shock resistance and heat resistance of Nylon-RIM parts are better than PU-RIM. 尼龙-RIM体系不用外脱膜剂,产品无需后固化处理,其制件抗冲击强度和耐热性等均比PU优越。
Second, key of the technology is the use of a melt able core which should not only bear pressure of the mold filling metal melt, but also could reduce the resistance of the core to metal contraction by the core being molten; 该技术的重点在于可熔性金属芯的应用,可熔性金属芯既要能使合金液圆满充型,又要在充型结束后熔化以减少收缩阻力;
At the same time, the method that combines composite electroless plating with metal spraying mold making to increase the wear resistance and operating life of composite mold is also proposed. 同时提出,将化学复合镀与金属喷涂制模技术结合起来,可以提高复合材料模具的耐磨性及使用寿命。
The paper studied the relation between the biosynthesis of antibiolitic antibviolitcs M182A produced by marine mold strain M182 and the resistance of self-secondary metabolites. 探讨海洋霉菌M182菌株对自身次生代谢产物-抗真菌抗生素M182A抗性与该抗生素产量的关系;
T_ ( 42)-2 is determined the best strain, in confronted culture and live test, whose biocontrol effect is 92.13%, as a result which can prevent cucumber gray mold efficiently. There is also carbendazim, sumilex and triadimefon reciprocation resistance. 经过平板对峙和活体拮抗性测定,确定T42-2为最佳拮抗性耐多菌灵菌株,其对黄瓜灰霉病的防效达92.13%,并且对多菌灵、速克灵和三唑铜存在交互抗性。
It was shown that with the increase in viscosity and solidification temperature of mold flux, the thermal conductivity and the heat flux density of flux were reduced, and the thermal resistance was increased. 结果表明:增加保护渣的粘度、提高保护渣的凝固温度,结晶器与坯壳之间渣膜的传热系数和热流密度都减小而热阻增加。
It is an urgent problem to increase the life of mold by improving the toughness and thermal fatigue resistance. 所以,如何提高3Cr2W8V钢的韧性和热疲劳性,从而提高模具的使用寿命是一个急需解决的问题。
Three kinds of cast iron materials made of the DISA line moulds were nitrided for the study. The influence of the process parameters on the substrate surface hardness of mold 、 the thickness of nitriding layer and the abrasive resistance ability were detected. 对常用于制作DISA模具的三种铸铁基体进行了离子渗氮的实验研究,分别测试了工艺参数对模具基体表层硬度、渗层深度和耐磨性的影响。
Different types of microorganisms showed different sensitivity to pulsed magnetic field. The E. coli was the most sensitive to pulsed magnetic field, while the yeast and mold had strong resistance. 2. 不同类型的微生物对脉冲磁场表现出不同的敏感性,大肠杆菌对脉冲磁场最为敏感,而酵母和霉菌对脉冲磁场有较强的抵抗力。
Magnesium alloy die-casting is a high temperature, high pressure, and high-speed process, for which magnesium alloy die-casting mold with high resistance to shock, high temperature oxidation, and thermal fatigue is required. 镁合金压铸是一个高温、高压、高速的过程,它要求镁合金压铸模具有抗冲击、抗高温氧化、抗热疲劳等性能。
Failure is usually caused by the surface of the mold started, thus requiring a higher surface hardness, wear resistance, anti-adhesion properties. 由于模具失效通常是由表面开始,因此要求表面具有更高的硬度、耐磨、抗粘连等性能。
The low phosphorus EN layer has higher melting point and good removing mold capability, its corrosion resistance is special good in alkali environment. The low-P EN layer can be used in electron welding area and high hardness treatment. 其中低磷化学镀镍层具有较高的熔点和较好的脱模性,而且它的耐碱腐蚀能力很强,主要应用于电子元件的焊接和高硬度处理方面。