首 頁 | 新聞英語 | 視聽英語 | 翻譯園地 | 實用英語 | 專欄作家 | 奧運英語 | 新詞新譯 | 書友天地 | 輕松英語  | 凈臉聯盟 | 英語論壇 | 少兒英語
    您現在的位置: En_language tips > 輕松英語 > 一問到底 Dec 26, 2005
     





      What is dry ice?

       
      Dry ice
       
      What is dry ice?

    "Dry Ice," the trademark name for solid carbon dioxide, reaches its solid state when cooled liquid carbon dioxide is put under pressure.

    Scientists successfully produced the snowy, white solid, which produced temperatures dipping as low as 109 degrees Fahrenheit, and envisioned dozens of practical uses for "Dry Ice." Unfortunately, they had yet to discover how to keep this solid from melting back into its original liquid state.

    Fortunately, the solution to the scientists' dilemma, which possibly dawned on them over cocktails at happy hour, lay in the fact that when "Dry Ice" mixes with liquids having very low freezing temperatures, for example alcohol, instead of melting, the solid turns into gas. Because the gas escapes into the air, it packs more refrigeration power than an identical amount of ice made from water.

    The primary use for "Dry Ice," both then and today, is to keep perishables fresh, especially during shipment. Solid carbon dioxide made its debut as the packing material of choice for ice cream.

    Today, products such as fish and meat can be shipped thousands of miles, and arrive at their destinations. Eggs can remain fresh indefinitely if refrigerated with solid carbon dioxide, as the primary reason they grow stale is the escape of carbon dioxide from tiny pores in their shells. When enveloped by the vapor from the gas solid carbon dioxide emits, the escape of carbon dioxide from their shells is cancelled out.

    Even florists take advantage of the preservative property of "Dry Ice," and can prevent flower buds from opening for up to three days by placing them in a solid carbon dioxide atmosphere. Essentially, "Dry Ice" temporarily freezes the aging process to suit our purposes.

     

    note:

    solid carbon dioxide: 固體二氧化碳

     

     

     

     

     

     

     

    perishable: 容易腐爛的東西

     

     

     

    cancel out: 抵償

     
     
     
    Copyright by chinadaily.com.cn. All rights reserved
    版權聲明:未經中國日報網站許可,任何人不得復制本欄目內容。如需轉載請與本網站聯系。
    None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited.
    AV无码免费永久在线观看| 亚洲中文字幕AV在天堂| 免费无码一区二区| 中文字幕在线无码一区二区三区| 中文字幕人妻无码系列第三区| 2024最新热播日韩无码| 无码精品A∨在线观看免费| 精品久久久久久无码中文野结衣| 久久人妻少妇嫩草AV无码蜜桃| 免费A级毛片无码无遮挡内射| 亚洲精品人成无码中文毛片| 无码成人一区二区| 中文字幕精品一区| 亚洲电影中文字幕| 亚洲精品无码鲁网中文电影| 高清无码在线视频| 精品人无码一区二区三区| 久久久久久国产精品无码下载| 中文字幕在线观看| 一本一道精品欧美中文字幕| 久久久精品人妻无码专区不卡| 少妇人妻无码精品视频| 亚洲一区AV无码少妇电影☆| 国产欧美日韩中文字幕| 日本乱中文字幕系列观看| 无码国模国产在线无码精品国产自在久国产 | 精品人妻大屁股白浆无码| 野花在线无码视频在线播放| 中文字幕天天躁日日躁狠狠躁免费| 无码AⅤ精品一区二区三区| 国产免费黄色无码视频| 人妻丰满熟妇无码区免费 | 无码精品人妻一区二区三区中| 成人无码AV一区二区| 中文字幕无码乱人伦| 亚洲精品无码高潮喷水在线| 久久久久久国产精品无码下载| 精品无码一区二区三区电影 | 少妇无码太爽了在线播放| 久久久网中文字幕| 中文字幕无码播放免费|