2021-7-1 · shanghai engineering machinery Крокодиловая дробилка shanghai machinery дробилка. Xangai Machinery Дробилка. shanghai machinery co ltd китай Shanghai Machinery Co Ltd which was founded in 1995 is located in No416 Jianye Road South JinQiao Area Pudong New District Shanghai China and has 230 000 square meters (including construction) modern production ...
Чангша, провинция Хунань, Китай [email protected] Ключевые слова: упругая волна, коэффициент затухания, частотные характеристики затухания, микроструктура горной породы, elastic wave, attenuation coefficient, rock microstructures, frequency attenuation characteristics