亚洲女同在线观看-亚洲女同在线-亚洲女同视频-亚洲女同精品中文字幕-美国激情ap毛片-美国黄色一级毛片

您好!歡迎訪問Beijing Le Si Ruirong hung Electronics Co. Ltd.的網站!阿里巴巴官方旗艦店 中文 ENGLISH
News Center
Your location:Homepage -> News Center -> Detail

Analysis of glass and metal packaging


Glass and metal package with graphite sintered plate. Drawing a single crystal with a graphite heater. Ion implantation and plasma etching with graphite components and Shi Momo by drawing the fiber; - EDM with graphite electrode; - mechanical carbon graphite (such as mechanical seal with graphite ring. Vacuum pump and compressor blade with graphite and graphite bearing rotary vane etc.); - Electrical carbon graphite (such as carbon and conductive contact materials); - graphite crystallizer for continuous casting; graphite products by powder metallurgy and hard alloy and electric furnace; melting metal (alloy) by graphite crucible; - other carbon graphite processing. Some people say that the glass metal package is a component of the trunk and limbs, some people say that the shell and chip is the relationship between the lips and teeth, skin and meat. In short, the consensus is that the shell is not only the package of the coat of the chip, it has a support (electrical connection, heat transfer, mechanical protection, etc.), but also components of the component. The quality of the shell is closely related to the quality and reliability of the components. As everyone knows, air tightness is the shell is one of the important indicators of the components, the cavity air tightness is not good to the outside water vapor, harmful ions or gas into the components of the resulting surface leakage, "knot" changes, as well as the failure mode parameters (according to reports, due to moisture content in the cavity due to component failure rate for more than 26% of the total failure rate). In the 1014A GJB548A sealing method, air tightness of the shell does not cover provisions for A4 test conditions, the failure criterion: unless otherwise specified, if the measurement of the leakage rate of more than 1 "Rl * 10-3 Pa? Cm3/s (helium), device (shell) should be regarded as a failure.
[Go back]   


主站蜘蛛池模板: 欧美乱大交xxxxx另类| 精彩视频一区二区三区| 制服丝袜中文字幕在线观看| 2017狠狠干| 免费看的一级毛片| 扒开双腿疯狂进出爽爽爽动态图| 青娱乐国产盛宴| 四虎影视永久在线观看| 好男人www社区| 日本电影100禁| 亚洲日产欧| 黑人精品| 国产男女猛烈无遮挡免费视频| 三级极精品电影 | 一个人看的www视频免费在线观看| 成年女人免费播放影院| 啪啪电影院| 国内精品久久久久影院网站| 两个体校校草被c出水| 美国式禁忌3| 久久青青草原精品影院| 十九岁日本电影免费完整版观看| 99xxoo视频在线永久免费观看| 欧美另类bbbxxxxx另类| 538视频在线观看| 国产va免费精品高清在线观看| lover视频无删减免费观看| 久久久久久亚洲精品中文字幕| 免费看一级淫片成人| 扒开女人下面| 全免费a级毛片免费看| 国产99精品在线观看| 乱妇伦| 免费观看性欧美大片无片| 欧美日本黄色| 特极毛片| 两个丫头稚嫩紧窄小说| 大陆黄色a级片| 中文天堂在线www| 美女的大胸又黄又www又爽| 大女小娟二女小妍|