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7 天
高精密厚膜印刷工艺在电真空陶瓷管壳中的技术应用
电真空陶瓷管壳是一种关键的电子元器件外壳,由于具有耐高温、耐腐蚀、绝缘性能优、真空度高、机械强度高的特性,被广泛用于封装高端半导体元器件、国防军工、电力输送和工业动力装置, 如电真空管开关、高频大功率电子管和大规模集成电路。
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1 个月
蛋壳上不起眼的小小气孔,居然能给餐桌造成大bug?
蛋壳的多孔结构:生命的呼吸通道 蛋壳由外蛋壳膜、石灰质蛋壳和壳下膜组成。壳下膜有两层:外层内蛋壳膜和内层蛋白膜,这些膜由细纤维交织成 ...
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