“irrigation canal system”造句，怎麼用irrigation canal system造句

1、On the basis of general introduction of the All-American Canal System and the All-American Canal Irrigation District, the facilities (dams, desilting works, irrigation canal system), project management and maintenance, and benefits of All-American Canal System were de scribed and analyzed in detail.

2、Water losses in irrigation canal systems are about 50 percent, and canal anti-seepage as an engineering technique of water saving irrigation is widely used in China nowadays.