operating duty造句

Abstract : the paper studies the important technique and index in application scope ， equipment configuration ， operating duty ， energy consumption ， irrigation application efficiency and economic benefit of pipe - sprinkler combined irrigation , and presents the usage method of the low - pressure pipe and multi - hole micro - sprinkler ribbon combined system
文摘:针对管喷结合灌水技术的应用范围、设备配置、运行方式、能耗、灌溉水利用系数以及效益等关键技术及指标进行了探讨，并提出了低压管道和多孔式微喷带结合系统的使用方法。
It's difficult to find operating duty in a sentence. 用operating duty造句挺难的