BS 1881∶Part203∶1986 Testing concrete. Recommendations for measurement of velocity of ultrasonic pulBS 1881∶Part203∶1986 Testing concrete. Recommendations for measurement of velocity of ultrasonic pulses in concrete
部份国外标准涉及版权问题,所以全部国外标准于2013年02月,全部删除!相关页面仅提供参考消息。