英语词汇“back-up safety device”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	back-up safety device
释义	back-up safety device 后备安全设备
随便看	ring closure ring-closure reaction ring clothing ring coal ring code ring coelom ring coil ring collar ring collector ring colorimetry ring complex ring compound ring compounds ring compression ring compressor ring concentrator ring configuration ring-connected system ring connection ring connector ring containment ring containments ring content ring contraction ring control network 北鄙之声北鄙之音北门之寄北门之管北门南牙北门管钥北门锁钥北面称臣北风之恋匘 24203 24204 24205 24206 24207 24208 24209 24210 24211 24212