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雅思写作    IELTS Pro forma
雅思小作文之流程图视频讲解与范文
发布日期 :2017.09.08    浏览次数:1854 次

小作文一般都是图表作文,常见的几种主要类型有:表格图,曲线图,柱状图,饼状图和图画题五大类。图画题主要分为流程图和地图题,一般每季度轮换题库的时候会出现。不管考到哪种题型,其要求都是一致的,先要挑选重要数值并且在相关处作比较。

雅思小作文该题视频讲解地址:http://www.iqiyi.com/w_19rv584261.html?src=sharemodclk131212

雅思小作文图画内之流程图。
The diagrams below show the stages and equipment used in the cement-making process, and how cement is used to produce concrete for building purposes.

Summarise the information by selecting and reporting the main features, and make comparsons where releant.

雅思小作文流程图

范文:

The first diagram indicates the stages and equipment in the process of making cement, and the second one illustrates how cement and other materials are mixed to produce concrete for building purposes.

Cement production involves the following steps. The first step is to put limestone and clay on two different conveyors. Then, these two types of materials are pressed into the crusher which breaks them into powder.  After that, the powder is poured into a mixer, and then mixtures are transmitted into a rotating heater which works with heat. The following step is that a band carrier leads the heated powder to a grinder where the cement comes out. Finally, cement is packed into bags,and the process is finished.
Concrete production is much more simple. Four different kinds of materials are needed in different proportion. Gravel accounts for the largest part, at 50%, followed by sand, which is 25%. Cement and water contributes 15% and 10% respectively. The four materials are then mixed and poured into a concrete mixer and after a period of whirling, concrete is produced.
In conclusion, making cement has more complex process than making concrete though concrete needs more materials than cement.
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