More than 50 leaders and representatives from the Inner Mongolia Autonomous Region Construction Engineering Quality and Safety Technical Service Center, Hohhot City, Baotou City, Ordos City, Ulanqab City, and other
When drilling 5m deep, the verticality of the drill pipe should be checked and calibrated in time . The size of steel casings is less than 5m in length and
Wimbledonhouse, London, UK (1969) the Wimbledon house (also known as Rogers house) designed by Rogers and his then wife Sue in the late 1960s aims to demonstrate a new prefabricated