diversion headwork渠首工程
headwork mechanization脑力劳动机械化
headwork k井架
irrigation headwork灌溉渠首工程
Baojixia Irrigation Headwork Project宝鸡峡渠首工程
timing device headwork延时器
headwork County-Xichuan渠首县淅川
headwork hub of Hengpaitou横排头渠首枢纽
No dam water Headwork无坝取水渠首
N（名词） mental work 脑力工作