The WHO says, “Larviciding measures may be effective as the leading method of vector control in urban areas.”

世卫组织称杀幼虫剂措施作为主要的传病媒介控制办法可能在城市地区才很有效。

The isoelectric lead method: this method consists of finding the isoelectric lead- the one with zero, or nearest to zero net amplitude.

该方法包括寻找等电导联，即净振幅为零或接近零的等电导联。