<span id="qh5pb"><optgroup id="qh5pb"></optgroup></span>
        <span id="qh5pb"><optgroup id="qh5pb"></optgroup></span>

        產(chǎn)品列表PRODUCTS LIST

        首頁 > 測(cè)試服務(wù) > TC3000 Thermal Conductivity
        TC3000 Thermal Conductivity
        點(diǎn)擊次數(shù):2339 更新時(shí)間:2014-09-01

         

        Thermal conductivity measuring methods can be divided into steady-state method and non-steady-state method by macroscopic mechanism of thermal conductivity. 

        Steady-state method requires long period ,and there are also many other factors which affect measuring accuracy. However, non-steady-state method has the advantage of short measuring time, high accuracy and low requirements for operational environment. Especially, the transient hot-wire method has been considered internationally as the best measuring method of thermal conductivity in the research area of thermal conductivity.

         

        Measuring Principle

        The origin of hot-wire method could be traced back to the year 1780 when an American scientistJoseph Priestley made the first experiment about heat transfer ability of air. In 1931,Stâlhane and Pyk, who are the first to adopt transient hot-wire method in measuring the thermal conductivity of solid, powder and liquid,  Hot-wire method is now widely used in gas, liquid, solid, metal fusion and so on. 

         
        主站蜘蛛池模板: 日美韩电影免费看| 国产亚洲日韩一区二区三区| 搡女人真爽免费视频大全| 免费a级毛片视频| 久久久亚洲裙底偷窥综合| 妇女自拍偷自拍亚洲精品| 8888四色奇米在线观看免费看| gogo全球高清大胆亚洲| 久久亚洲国产最新网站| 久久青草精品38国产免费| 亚洲精品一级无码中文字幕| 久久综合久久综合亚洲| 无码一区二区三区免费视频| 97se亚洲综合在线| 91久久精品国产免费直播| 亚洲色婷婷一区二区三区| 美女裸免费观看网站| 在线A级毛片无码免费真人| 91亚洲国产成人久久精品网站| 麻花传媒剧在线mv免费观看| 中文字幕亚洲电影| 免费精品国自产拍在线播放| 在线免费一区二区| 日本高清免费中文在线看| 最新国产AV无码专区亚洲 | 亚洲AV无码成人精品区蜜桃| 日韩在线观看免费| 免费国内精品久久久久影院| 精品久久久久久无码免费| 亚洲精品国产精品国自产观看| 国产一区二区三区免费观在线| 亚洲裸男gv网站| 久热中文字幕在线精品免费| 久久亚洲AV成人无码国产最大| 毛片在线看免费版| 在线免费视频你懂的| 91亚洲国产成人久久精品| 91在线视频免费看| 亚洲色欲色欱wwW在线| 成年人免费视频观看| 国产精品午夜免费观看网站|