extremely thin but dense oxide layer as dielectric. high-speed data processing in leading-edge semiconductors is made possible by using copper in semiconductors. to prevent copper from diffusing into the semiconducting layers, ta is used as thin but effective barrier layer. due to their high degree of...
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section product description saposhnikovia root is umbrelliferae plant roots in the wind, this product is a prototype or elliptic thick slices, outer epidermis ash brown, with longitudinal wrinkles, some can see lenticel transverse looks like protuberant, dense ring or remaining hairy leaf base. section of...