this paper summarizes the mechanical properties of a variety of polyvinyl chloride, the difference of ageing resistant performance and the influence on quality of film products.
文中介绍了不同型号聚氯乙烯的力学性能、耐老化性能的差别,及其对薄膜制品质量造成的影响。
install an ageing resistant easy bending soft plastic cloth tube at the bottom of the shell while there are uniformly arranged gas ejecting hole on the cloth tube.
该发明提出的立式列管传热设备管外污垢三相流态化在线清洗技术,在壳程底部安装有耐老化、容易弯曲变形的软塑料布气软管,布气软管上开设有均布排列的喷气孔。
the catalytic activities and ageing resistant performance of above catalysts for methane combustion was evaluated in a continuous-flow micro-reactor.
利用连续流动微型反应装置研究了催化剂的反应性能,抗老化性能及反应条件对反应性能的影响。