日韩欧洲精品无码AV,99国产午夜精品一区二区天美,精品久久免费一区二区三区四区,久久综合图区亚洲综合图区,久久久久亚洲AV免费观看,精子网久久国产精品,亚洲AⅤ无码一区二区二三区性色,亚洲精品国产电影,亚洲资源在线观看,婷婷五月丁香在线

  • 
    
  • <ul id="yy6ca"></ul>
  • <del id="yy6ca"></del>
    <ul id="yy6ca"></ul>
    <strike id="yy6ca"><menu id="yy6ca"></menu></strike>
    Hotline:400-880-1556

    English




    Project Introduction

    The purpose of the low-temperature test is to test whether the specimen can be stored, manipulated and controlled in a long-term low-temperature environment, and to determine the adaptability and durability of military and civilian equipment for storage and work under low-temperature conditions. Physical and chemical properties of materials at low temperatures. The standard has specifications for pre-test treatment, initial test, sample installation, intermediate detection, post-test treatment, heating rate, temperature cabinet load conditions, and volume ratio between the measured object and the temperature cabinet.

    The failure mode of the test piece under low temperature conditions: the parts and materials used in the product may crack, embrittle, the movable part is stuck, and the characteristics change at low temperature.

    Effect of low temperature

    1. Make the material hard and brittle;

    2. The viscosity of the lubricant increases, the flow capacity decreases, and the lubrication effect decreases;

    3. The performance of electronic components has changed;

    4. Water condensation and icing;

    5. Seal failure;

    6. The mechanical structure changes caused by the shrinkage of the material.

    Application range

    The low temperature test is mainly used for scientific research, the preservation of medical supplies, biological products, ocean products, electronic components, chemical materials and other low temperature experiments and storage of special materials.

    Method Standard

    GB/T2423.1-2008 "Environmental Testing of Electrical and Electronic Products Part 2: Test Method Test A: Low Temperature"

    IEC 60068-2-1:2007 "Environmental Testing of Electrical and Electronic Products Part 2: Test Methods Test A: Low Temperature"


    Online consultation

    Online consultation

    Recommend
    • Brazil ANATEL Certification

      Brazil ANATEL Certification

      ANATEL certification is a mandatory certification for telecommunications equipment or related equipment by the Brazilian National Telecommunications Administration (Agência Nacional de Telecomunica??es), including wireless communication equipment, wired communication equipment and related auxiliary equipment; this certification ensures that telecommunications equipment sold in the Brazilian market meets Brazil\'s technical standards and regulatory requirements, and guarantees the product\'s quality requirements such as radio frequency, electrical safety, electromagnetic compatibility, and electromagnetic exposure. If the product entering Brazil does not complete ANATEL certification, it may face fines, seizures, and other penalties.

    • COC certification in Algeria

      COC certification in Algeria

      COC certification in Algeria is a mandatory certification for products exported to Algeria, ensuring that the products comply with the country\'s safety, quality, and technical standards. The certification process includes document review, product testing, and factory inspection. Products that pass certification can be legally sold in the local market, protecting consumer interests and promoting fair trade.

    • Saudi Arabia GCC Certification

      Saudi Arabia GCC Certification

      GCC certification is the abbreviation for Gulf Cooperation Council certification, which is a mandatory certification requirement for products entering the market in Saudi Arabia and other countries in the Gulf region.

    Low temperature test

    The purpose of the low-temperature test is to test whether the specimen can be stored, manipulated and controlled in a long-term low-temperature environment, and to determine the adaptability and durability of military and civilian equipment for storage and work under low-temperature conditions.

    Get a quote
    人人妻人人澡人人爽曰本 | 日本丰满少妇xxxx| 狠狠色噜噜狠狠狠777米奇小说| 成人国产欧美大片一区| 日本一区二区三区免费高清| 国产卡一卡二卡三高清| 国产成人综合色91亚洲| 亚洲精品一二三区-久久| 成人免费无码大片a毛片| 丰满少妇被猛烈进入| 国产成人无码av在线播放不卡| 午夜福利一区二区三区在线观看| 黄色视频在线免费观看| 人人澡人人透人人爽| 国产激情一区二区三区成人| 亚洲第一视频91| 国产香蕉免费精品视频| 久久99精品久久久久子伦| 中文字幕在线免费看线人| 国产免费一区二区三区免费视频| 美女又黄又免费的视频| 久久天天躁狠狠躁夜夜网站| 少妇与黑人一二三区无码| 亚洲色丰满少妇高潮18p| 亚洲中文字幕无码爆乳av| 丰腴饱满的极品熟妇| 国产精品一区二区久久精品| 久激情内射婷内射蜜桃| 亚洲欧美18岁网站| 少妇无码一区二区三区| 91精品啪在线观看国产20岁 | 青青草原亚洲| 中文字幕亚洲综合久久菠萝蜜| 日本在线精品视频| 国产伦精品一区二区三区免.费 | 99久久人妻精品免费一区| 岛国在线无码免费观| 777亚洲熟妇自拍无码区| 日日噜噜夜夜狠狠久久丁香五月| 亚洲AV优女天堂熟女| 91在线日韩|