bending machines短语¹⁴⁴⁹⁷²⁺² 例句 This paper introduces the features of hydraulic system for large medium frequency heating tube bending machines designed and the problems occurring while designing in- stalling. 本文介绍了自行设计的大型中频加热弯管机的液压系统的特点和设计、安装调试中遇到的问题及解决办法。 dictall