water cock短语¹⁴⁴⁹⁷²⁺² 基本例句 n.水龙头水旋塞 The water cock is one of the most important composition parts on the drilling machine. 水龙头是钻机的重要组成部件。 cnki This article uses the pertinent data to design the main structure of the SL450 style water cock, and has checked up the intensity; 本文利用有关资料对 SL450型水龙头的主要结构进行设计，并进行了强度较核； cnki