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