Pilot pollution is one of the key problems in public CDMA mobile network, which affects the service quality and capacity of network.

在公众CDMA蜂窝移动通信网中，导频污染是影响网络服务质量和系统容量的一个重要原因。

youdao

Within 18 months, water pollution from the 187 pilot plants fell by 40 percent.

在18个月的时间里，这187家试点企业的废水污染减少了40%。

youdao

Within 18 months, water pollution from the 187 pilot plants fell by 40 percent.

在18个月的时间里，这187家试点企业的废水污染减少了40%。

youdao