below shows the process by which bricks are manufactured for the building industry.
summarise the information by selecting and reporting the main features, and make comparisons where relevant.
write at least 150 words.
流程图小作文
雅思考官9分范文如下:
the diagram shows the various stages in the production of bricks used in building industry.
it is clear that there are mainly seven steps involved in this process, beginning with the digging of clay to the delivery of bricks to construction sites.
at the beginning of the process, clay is dug from the ground. the clay is put through a metal grid, and it passes onto a roller where it is
mixed with sand and water. after that, the clay can be shaped into bricks in two ways: either it is put in a mould,
or a wire cutter is used.
at the fourth stage in the process, the clay bricks are placed in a drying oven for one to two days. next, the bricks are heated in a kiln at a moderate temperature (200 - 900 degrees celsius) and then at a high temperature (up to 1300 degrees), before spending two to three days in a cooling chamber. finally, the finished bricks are packaged and delivered.