asphaltic membraneous materials,asphalt felt,asphalt roofing felt,asphalt;roofing felt,是什么意思

用法例句

The quality index of PET staple fiber was defined according to production process and technical parameters of roofing felt.

根据油毛毡基布的生产工艺和技术指标确定涤纶短纤维的质量指标。