
Standard Specification for External Sealing Bands for Concrete Pipe, Manholes, and Precast Box Sections (Metric)
出版:American Society for Testing and Materials

專家解讀視頻
Standard Specification for External Sealing Bands for Concrete Pipe, Manholes, and Precast Box Sections (Metric)
出版:American Society for Testing and Materials
專家解讀視頻