engineering prototype短语¹⁴⁴⁹⁷²⁺² 基本例句 计工程样机 Finally, an engineering prototype machine controlled by a hydraulic cylinder was developed, it could be mounted on the cable and taken back quickly and safely. 研制的爬缆机器人具有液压控制的弹簧压紧装置，能在缆索上快速安装和安全收回。 cimspaper.com