výroba Balenie alebo balenie hovorca pipe html predchodca stvrdnúť pokračovať
Hebei Deko Commercial Co., Ltd. - DI water pipe K7,K8,K9,Class C: https://www.dekocommercial.com/product-di-water-pipe-k7,k8,k9,class-c.html 1. Material: Ductile iron grade 500-7/ 450-10 in accordance with ISO 1083 2. Standard: ISO 2531/EN545/ EN598 ...
Scattering of guided waves propagating through pipe bends based on normal mode expansion | Scientific Reports