plastic butterfly meaning in Chinese
胶蝴蝶，胶托
钮模
Examples
- 4 . analyzing the seal structure of butterfly valve the evolution process of butterfly valve ' s seal structure is analyzed in detail by using the theory of technology evolution . two improved design blueprints are advanced : magnetic field seal butterfly valve and foam plastic butterfly valve , which obtain the ratification of the factory of shijiazhuang valve
蝶阀密封结构分析应用技术进化理论对蝶阀密封结构的进化进行了分析，并提出了两种改进设计方案：磁场作用密封蝶阀和泡沫材料蝶板的蝶阀，为蝶阀的密封结构提出了新的工作原理，得到了石家庄阀门一厂的认可。