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雅思小作文流程图范文:蚕与蚕丝

2020-09-28 03:30:01
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雅思小作文中流程图今年还没有出现几次,但想要写好流程图,了解写法是重中之重。下面新东方网特为大家收集整理了雅思小作文流程图范文:蚕与蚕丝。更多雅思报名官网的最新消息,最新、最专业的雅思备考资料,新东方网将第一时间为大家发布。下面一起来学习一下吧! It is a process diagram, featuring the life cycle of the silkworm and the production of silk cloth. The graphic illustrates the life process of the silkworm and the phases in the manufacture of silk material. Overall, the life cycle is a natural process and contains four cyclical phases, beginning with the laying of eggs and ending with the birth of a new moth from a cocoon. The production of silk is, in contrast to the previous stage, a man made linear process comprising of 6 main stages. To begin with, eggs are produced by the moth and it takes 10 days for the eggs to hatch into silkworm larvae that feed on mulberry leaves. This stage takes between 4 and 6 weeks before the worms construct a cocoon from silk thread, taking approximately one week. They stay there for around a fortnight, subsequently emerging as moths and the process can begin again. The first stage in the manufacture of silk is the selection of cocoons and these are then boiled. Once boiled, the silk thread is unwound to a length of between 300 and 900 meters. Finally, the silk can be twisted and weaved into cloth before being dyed. 180 words 以上是新东方网给大家带来的雅思小作文流程图范文:蚕与蚕丝。希望能够对大家有所帮助。希望大家认真积极的备考,早日取得优异的成绩,更多精彩,欢迎随时关注新东方网! 热门关键词推荐:

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