男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影
您現在的位置: Language Tips> Audio & Video> Special Speed News  
   
 





 
Building with adobe (no computer required)
[ 2009-01-13 10:05 ]

Download

People must experiment to find the right combination of soil mix, water content and drying methods.

This is the VOA Special English Development Report.

This week in our report we are going to talk about adobe. No, not the information technology company in California, Adobe Systems. We mean the traditional building product made of soil and other materials. Adobe is shaped into bricks that are laid one on top of another and used as a low cost way to build walls and houses.

Building with adobe (no computer required)

Adobe is soil that contains at least 40 percent clay. In its purest form, clay can be shaped and stretched and used to make objects. Clay becomes very hard when it is put in a fire or a special oven called a kiln.

Adobe becomes a sticky mud when it is mixed with water. Liquid adobe mixture can be poured into containers called molds. This way the adobe can be shaped into bricks of the desired size.

Adobe bricks must be dried completely before they are used. This is necessary so that the walls of a building will not shrink or break.

Too much water can make adobe weak. Sometimes other materials are added to the adobe mixture to strengthen it. These materials help keep the water in correct balance with the soil. This will help the adobe resist changes in the weather and humidity.

One material that is commonly added to strengthen the adobe is straw. Straw is the dried stem part of plants such as wheat, millet and sorghum. Straw is especially popular in places where the clay content of the soil is high.

Other materials such as lime and cement can be added to strengthen the adobe. About once a year, houses made from adobe should be given a layer of mud. This so-called paint job helps keep the adobe strong.

Adobe can take a long time to dry and become hard. So the bricks should be made in hot dry weather. If the weather is right, the bricks should dry in 7 to 10 days.

Many people around the world have found that adobe is a good way to make houses or farm buildings. But people who work with adobe must experiment. They must find the right combination of soil mix, water content and drying methods.

More information about adobe can be ordered from EnterpriseWorks/VITA, an anti-poverty group in Washington, D.C. The Web site is enterpriseworks.org. Click on News & Resources, then the link for Publications.

And that's the VOA Special English Development Report. Transcripts, MP3s and podcasts of our reports are at voaspecialenglish.com. I'm Steve Ember.

 

(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
 
Walking in the US first lady's shoes
“準確無誤”如何表達
英國新晉超女蘇珊大媽改頭換面
豬流感 swine flu
你有lottery mentality嗎
翻吧推薦
 
論壇熱貼
 
別亂扔垃圾。怎么譯這個亂字呀?
橘子,橙子用英文怎么區分?
看Gossip Girl學英語
端午節怎么翻譯?
母親,您在天堂還好嗎?

 

主站蜘蛛池模板: 秦皇岛市| 宜春市| 乐都县| 灌阳县| 宝兴县| 甘谷县| 江达县| 瑞丽市| 梧州市| 龙岩市| 通海县| 石楼县| 渝中区| 花莲市| 开鲁县| 长泰县| 施秉县| 景泰县| 三江| 富民县| 白城市| SHOW| 曲松县| 荥阳市| 凌源市| 晋城| 祥云县| 和龙市| 大邑县| 彰武县| 正安县| 达尔| 腾冲县| 忻州市| 漯河市| 临沭县| 上栗县| 耒阳市| 蒙阴县| 雷州市| 和平县| 金华市| 宁国市| 新绛县| 客服| 巴南区| 上蔡县| 望奎县| 清徐县| 基隆市| 资中县| 望江县| 曲松县| 融水| 蒙阴县| 丁青县| 巨鹿县| 宜城市| 铜川市| 盐边县| 大关县| 江油市| 大足县| 泽库县| 康乐县| 自治县| 阳新县| 星子县| 开原市| 华蓥市| 九江县| 同仁县| 越西县| 突泉县| 重庆市| 昌乐县| 两当县| 金山区| 永修县| 枝江市| 苏州市| 新余市|