54 你想多了 别人不会给你保证CPU 是好的 。不过板都是没修过没拆过任何芯片和元件，除了有些...
Abstract— We used the ultraviolet to visible spectrometers onboard the midcourse space experiment to obtain the first ultraviolet spectral measurements of a bright meteor during the 1997 Leonid shower. The meteor was most likely a Leonid with a brightness of about‐2 magnitude at 100 km altitude....