The diagram shows the life cycle of silkworms and the process of making silk cloth.
The life cycle is divided into several particular developing stages. It starts when a moth produces her eggs on the mulberry leaves. After ten days the eggs grow into silkworm larva, whose foods are the mulberry leaf. The second stage ends. In the following four to six weeks, the larva will generate silk threats which cover the larva. This is the third stage. The fourth stage lasts for three or eight days during which cocoon is formed. 16 days after the formation of the cocoon, a moth finally comes out of the cocoon. A new cycle starts.
The production of the silk cloth consists of numerous steps. The first is to select cocoons, which then are heated in boiled water. After the heat treatment, the cocoon is ready to be decomposed into threads ranging from 300 to 900 meters in length. The second is to twist the thread together. To dye is the third. After this process, silk cloth is woven.
湖南高考英语复习课件牛津译林版模块选修7《Unit 4 Public transport》公共交通
湖南高考英语复习课件牛津译林版模块必修5《Unit 2 The Environment》The environment环境
湖南高考英语复习牛津译林版模块必修5练习《Unit 3 Science versus nature》科学与自然
湖南高考英语复习牛津译林版模块必修2练习《Unit 2 Wish you were here》希望你在这里
湖南高考英语复习牛津译林版模块选修6练习《Unit 2 What is happiness to you?》对你来说幸福是什么
湖南高考英语复习牛津译林版模块选修6练习《Unit 3 Understanding each other》相互了解
湖南高考英语复习课件牛津译林版模块必修4《Unit 3 Tomorrow’s World》Tomorrow’s world明天的世界
海南省高考英语复习课件:Module 5《Cloning》(外研版选修6)
海南省高考英语复习课件:Module 6《The World’s Cultural Heritage》(外研版选修7)
湖南高考英语复习课件牛津译林版模块选修6《Unit 3 Understanding each other》相互了解
湖南高考英语复习课件牛津译林版模块必修5《Unit 1 Getting along with others》与他人相处
广东高考英语复习单元测试必修1:Unit4《Earthquakes》(新人教版)
湖南高考英语复习课件牛津译林版模块选修6《Unit 2 What is happiness to you?》对你来说幸福是什么
广东高考英语复习单元测试必修1:Unit5《Nelson Mandela- a modern hero》(新人教版)
广东高考英语复习单元测试必修1:Unit3《Travel Journal》(新人教版)
海南省高考英语复习课件:Module 6《The Tang Poems》(外研版选修8)
广东高考英语复习单元测试必修1:Unit2《English around the world》(新人教版)
海南省高考英语复习课件:Module 6《War and Peace》(外研版选修6)
湖南高考英语复习牛津译林版模块必修4练习《Unit 1 Advertising》Advertising广告
湖南高考英语复习牛津译林版模块选修6练习《Unit 1 Laughter is good for you》笑对你有好处
湖南高考英语复习课件牛津译林版模块必修2《Unit 3 Amazing people》有所作为的人
湖南高考英语复习课件牛津译林版模块必修2《Unit 1 Tales of the unexplained》未解之谜
湖南高考英语复习牛津译林版模块必修5练习《Unit 1 Getting along with others》与他人相处
湖南高考英语复习课件牛津译林版模块选修6《Unit 4 Helping people around the World》帮助全球
海南省高考英语复习课件:Module 3《Adventure in Literature and the Cinema》(外研版必修5)
湖南高考英语复习牛津译林版模块选修7练习《Unit 3 The World online》网上世界
湖南高考英语复习课件牛津译林版模块选修7《Unit 2 Fit for life》健康生活
湖南高考英语复习课件牛津译林版模块选修7《Unit 3 The World online》网上世界
湖南高考英语复习牛津译林版模块必修2练习《Unit 1 Tales of the unexplained》未解之谜
湖南高考英语复习牛津译林版模块选修7练习《Unit 1 Living with technology》与技术同在
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