兰尾叶甲(Mimastra cynura Hope)药剂防治试验和综合治理措施的研究
The winners will be announced at a special ceremony in London later this month.
3~5 μm波段低发射率磷酸盐耐高温涂料的研究
Heat resistant coating with low infrared emissivity in a wavelength range of 3~5μm was prepared by using phosphate and lead oxide as the adhesive and paint, respectively The emissivity of the coming…
Y4-73-11 No20D型锅炉引风机技术改造及效果
针对独山子石化矿区集中供热锅炉Y4-73-11No20D型引风机轴承密封失效原因进行了分析,通过更换密封件材料、改进密封设计及密封方式等手段,解决了轴封润滑油泄漏严重的难题,可为同类中、低速轴承密封改造提供借鉴.