菲涅尔镜片又称螺纹透镜，镜面上刻录了大小不一的螺纹。上一代主流会采用菲涅尔镜片因为这样透镜更薄更轻，厚度很薄，通常只有几毫米，重量也大大减轻。使用螺纹镜片会有一定的牺牲，因为螺纹会影响曲率和光线聚焦。 I don't have any expertise wanting to provision a VM to get unique access over a GPU, but I see no rationale You could not spin up a VM with whatever specs you desire, set up games and M... https://coingenius.news/sec-asks-updated-spot-ethereum-etf-filings-from-us-exchanges-report/