例句與造句

1. From the above figure , we can see the original structure remains unchanged and the new packet - switched network is formed by adding a packet control unit ( pcu ) to the bss part
   圖1gprs網(wǎng)絡(luò)結(jié)構(gòu)從網(wǎng)絡(luò)結(jié)構(gòu)圖可以看到，原有的網(wǎng)絡(luò)結(jié)構(gòu)保持不變，只是在bss部分增加了分組控制單元( pcu ) ，新建了一個(gè)分組網(wǎng)絡(luò)。
2. It's difficult to find packet control in a sentence. 用packet control造句挺難的