无铅再流焊接过程中,发生在HDI积层多层PCB第二次压合的PP层和次层铜箔棕化面之间的分离现象,为爆板。 有挥发物的形成源死产生爆板的必要条件: (1)PCB板中存在水汽是导致爆板的首要原因。 (2)存储和生产过程中湿气的影响也是导致爆板的重要原因。
防爆板 bursting diaphragm ; FirePro-S ; rupture pressure disc
劲爆滑板 Massive Snowboarding ; Skate ; Extreme Skate Online ; Extreme Sports Online
劲爆水上滑板 Wakeboarding ; Wakeboarding Unleashed featuring Shaun Murray ; Wakeboarding Unleashed
劲爆单脚踏板车 Razor Scooter
防爆膜板 explosion diaphragm
多层板爆炸焊 explosive welding of multiplayer plates ; explosive welding
劲爆滑板车 Razor Freestyle Scooter
劲爆极限滑板 TONY HAWK'S PRO SKATER
爆破板 rupture disk ; DONADON
本文介绍了含有表面环向裂纹的内压简体及大型管道采用轴向加弧形务板与钢丝缠绕的止裂、抑爆设计原则及设计方法。
The paper presents the design criteria and method for arresting crack and burst of the internal pressured vessels of big pipes with circular surface crack by arched strip and wound wire.
同时,针对现有电爆装置在库房贮存中存在的问题,提出了将木制架板改为金属架板的存放方式。
At the same time, aimed at the problems meet in the storage of EED, the wood frame was used instead of metal frame.
同时还介绍了蒸爆在植物纤维素水解和制无胶板中的应用,此外本文还对蒸爆设备作简要描述。
The same time, the application of steam explosion in the process of plant hydrolysis and the equipment was also described.
应用推荐