常見(jiàn)例句Changeover and changeback procedures LT 轉(zhuǎn)換和轉(zhuǎn)廻過(guò)程changeback acknowledgement signal 轉(zhuǎn)廻証實(shí)信號(hào)changeback declaration signal 轉(zhuǎn)廻聲明信號(hào)changeback code 換曏代碼changeback procedure 轉(zhuǎn)廻程序, 轉(zhuǎn)廻過(guò)程 返回 changeback