economic time是什么意思

用法例句

A Study of Xinjiang Defense in Late 19th Century;

建省时期新疆防务建设研究

With the advantages of saving time and high efficiency, the method may make the files stored, idlentified, supplemented and eliminated more conveniently.

对立卷方式进行变革，废弃目前通行的主“卷”而采用以 “件”为保管单位，具有省时高效、便于文件的保护、利用、增补、鉴定和销毁的功能。