fail-safe device 中文意思是什麼
fail-safe device
解釋
故障自動防護裝置-
One such device is a stainless steel chain connecting the window sash with the window frame. we understand the industry is examining similar fail - safe devices
其中一個裝置是于鋁窗加裝一條不銹鋼鐵? ,把窗扇與窗框連系起來。我們知道業界正探討其他類似的安全裝置。
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