local origin
3.C) COPY OF CERTIFICATE OF ORIGIN ISSUED BY LOCAL CHAMBER OF COMMERCE IN NAME OF ABCDEFG.
6.Abstract: A number of comprehensive study data of cores,structures,inclusions,well-testing performance and fracture pressure gradient have shown that there are several fracture types in the Jurassic tight sandstone reserviors of western Sichuan basin,such as local structures,subtraction (load relieving),stratification and corrosion etc.The leading origin type of fracture is the paleo-subtractive one formed by uplifting subtraction during geohistorical process,which is the main percolation passage in the process of oil/gas concentration,reservoiring and production.
10.The origin, definition and the eaves rafter of small yards were expounded in this paper, and the forms, function and concepts of small yards in the traditional local-style dwelling houses were compared and analyzed in detail, so as to give some enlightenment to the layout of architectural space.

