另外在使用的时后要稍微注意的是,5670系列的真空管为了降低干扰与噪声,结构里有一层内部屏蔽(Internal Shield),其引出的接脚为第五脚,在实际使用时最好要将第五脚接地,在多级直接交连的场合要注意其阴极-灯丝最大压差为+-100V,如果阴极与...
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internal shield ring 内屏蔽圈
internal thermal shield 内冷屏
internal magnetic shield 内磁屏蔽
·2,447,543篇论文数据,部分数据来源于NoteExpress
The Obama administration said it was asserting the doctrine in the Fast and Furious case to shield documents that include internal deliberations traditionally protected from outside eyes.
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