<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
          您現在的位置: Language Tips> Audio & Video> Special Speed News  
             
           





           
          How to do it: Making paper by hand
          [ 2009-07-07 17:23 ]

          Download

          Modern paper-making began in China about 2,000 years ago.

          This is the VOA Special English Development Report.

          The earliest process of making paper was done almost 5000 years ago in Egypt and the Nile Valley. In those days, paper was made from strips of the papyrus plant.

          How to do it: Making paper by hand

          Modern paper-making began in China about 2000 years ago. This process produced paper from cloth, straw, wood or the bark of trees. The raw materials are struck over and over until they become loose. Then they are mixed with water.

          After the water has been removed, the flat, thin form remaining is permitted to dry. This becomes a sheet of paper.

          Large machines started to be used for making paper near the end of the sixteenth century. Today, paper-making is a big business. But it is still possible to make paper by hand, since the steps are the same as using big machines.

          You should choose paper with small amounts of printing. Old envelopes are good for this reason. Colored paper also can be used, as well as small amounts of newspaper. Small pieces of rags or cloth can be added. These should be cut into pieces about 5 centimeters by five centimeters.

          Everything is placed in a container, covered with water and brought to a boil. It is mixed for about two hours with some common chemicals and then allowed to cool. Then it is left until most of the water dries up. The substance left, called pulp, can be stored until you are ready to make paper.

          How to do it: Making paper by hand

          When you are ready, the pulp is mixed with water again. Then the pulp is poured into a mold. The mold is made of small squares of wire that hold the shape and thickness of the paper. To help dry the paper, the mold lets the water flow through the small wire squares.

          After several more drying steps, the paper is carefully lifted back from the mold. It is now strong enough to be touched.

          The paper is smoothed and pressed to remove trapped air. You can use a common electric iron used for pressing clothes.

          There are many other technologies for people making paper using small machines.

          Internet users can do a search and find directions for making homemade paper. You can also order information about making paper from the group EnterpriseWorks/VITA. Its Web site is enterpriseworks.org.

          And that's the VOA Special English Development Report. Transcripts, MP3s and podcasts of our reports are at voaspecialenglish.com. You can also follow us at twitter.com/voalearnenglish. I'm Steve Ember.

          Related stories:

          More US parents think beyond most popular names for babies

          Fireworks: What is all the noise about?

          Folklife Festival takes visitors to the ancient country of Wales

          White firefighters win closely-watched employment case

          (Source: VOA 英語點津編輯)

          英語點津版權說明:凡注明來源為“英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
          相關文章 Related Story
           
           
           
          本頻道最新推薦
           
          More than 9,000 officials guilty of corruption
          法國呼吁市民微笑迎游客
          電擊療法 shock therapy/treatment
          研究:愛情不是婚姻唯一保鮮秘訣
          家中度假 staycation
          翻吧推薦
           
          論壇熱貼
           
          英語學習,勢在必得
          誠征英文翻譯十四行詩,懸賞500元
          阿甘正傳經典英文語句
          寫給歌德的情書
          “達人”的準確翻譯是什么?

           

          主站蜘蛛池模板: chinese极品人妻videos| 92精品国产自产在线观看481页| 国产精品第一页中文字幕| 精品无码国产污污污免费| 久久精产国品一二三产品| 国产精品99一区二区三区| 亚洲欧美综合一区二区三区| 久久精品不卡一区二区| 高清欧美性猛交XXXX黑人猛交| 日本久久久www成人免费毛片丨 | 亚洲蜜臀av乱码久久| 久久亚洲国产成人精品v| 亚洲综合高清一区二区三区| 婷婷综合缴情亚洲| 国产精品老熟女露脸视频| 神马视频| 久久精品av国产一区二区| 红杏av在线dvd综合| 蜜臀aⅴ国产精品久久久国产老师 日韩一区在线中文字幕 | 久久精品国产只有精品66| 波多野结衣久久一区二区| 中文字幕日韩一区二区不卡| 亚洲综合天堂一区二区三区| 九九在线精品国产| 欧美XXXX黑人又粗又长精品| 国产一区二区不卡在线视频| 免费人成视频在线观看网站| 成人看的污污超级黄网站免费| 精品国产亚洲第一区二区三区| 亚洲色图欧美激情| 亚洲视频日本有码中文| 亚洲欧洲日产国码二区在线| 亚洲线精品一区二区三区| 国产成人不卡无码免费视频| 中文字幕少妇人妻精品| 国产一区二区日韩在线| 精品无码国产一区二区三区av| 成人无码午夜在线观看| 中文字幕日韩国产精品| 午夜福利精品国产二区| 91在线精品麻豆欧美在线|