熱封塗層 的英文怎麼說
中文拼音 [rèfēngtúcéng]
熱封塗層
英文
heat-seal coating-
At the initial stage of planar technique, b was employed as ideal diffusion impurity in base - region of npn si planar devices because of the match of its solid - solubility and diffusion coefficient in si with those of p in emission - region, and the good shield effect of sio2 film to b. but because of the relatively large solubility ( 5 1020 / cm3 at 1000 ) and the small diffusion coefficient, the linear slowly - changed distribution of acceptor b in pn junction can not be formed, which could not cater to the requirement of high - reversal - voltage devics. thereafter b - a1 paste - layer diffusion technology and close - tube ga - diffusion technology had been developed, while the former can lead to relatively large the base - region deviation and abruptly varied region in si, which caused severe decentralization of current amplification parameter, bad thermal stability and high tr ; the latter needed the relatively difficult pack technique, with poor repeatability, high rejection ratio, and poor diffusion quality and productio n efficiency
在平面工藝初期，由於b在硅中的固溶度、擴散系數與n型發射區的磷相匹配， sio _ 2對其又有良好的掩蔽作用，早被選為npn硅平面器件的理想基區擴散源，但b在硅中的固溶度大（ 1000時達到5 10 ~ （ 20 ） ，擴散系數小， b在硅中的雜質分佈不易形成pn結中雜質的線性緩變分佈，導致器件不能滿足高反壓的要求，隨之又出現了硼鋁塗層擴散工藝和閉管擴鎵工藝，前者會引起較大的基區偏差，雜質在硅內存在突變區域，導致放大系數分散嚴重，下降時間t _ f值較高，熱穩定性差；後者需要難度較大的真空封管技術，工藝重復性差，報廢率高，在擴散質量、生產效率諸方面均不能令人滿意。Packaging materials and systems for medical devices which are to be sterilized - part 9 : uncoated nonwoven materials of polyolefines for use in the manufacture of heat sealable pouches, reels and lids - requirements and test methods
要消毒的醫療器材用包裝材料和系統.第9部分:熱封口小袋紙卷和蓋用未塗層非機織聚烯烴材料.要求和試驗方法Packaging materials and systems for medical devices which are to be sterilized - part 10 : adhesive coated nonwoven materials of polyolefines for use in the manufacture of heat sealable pouches, reels and lids - requirements and test methods
要消毒的醫療器材用包裝材料和系統.第10部分:熱封口小袋紙卷和蓋用粘合劑塗層非機織聚烯烴材料.要求和試驗方法Standard test methods for assessing the durability of absorptive electrochromic coatings on sealed insulating glass units
密封隔熱玻璃元件上吸收的電鍍鉻塗層穩定性評價的標準試驗方法Abstract : the paper presents the development and applications of thermal barrier coating, seal ( clearance control ) and wear resistance coating for aero gas turbine engine
文摘:介紹了在現代航空燃氣渦輪發動機上熱噴塗熱障、封嚴、耐磨塗層的開發應用實例。分享友人