long grain短语¹⁴⁴⁹⁷²⁺² 基本例句 长颗粒 Experiment showed: though slow heating benefits to structure inheritance, long grain and fracture inheritance will bring about, therefore lower temperature per treatment must be taken. 试验表明：慢速加热虽然利于组织形态遗传，但粗大晶粒和断口亦发生遗传，因此应采用较低温度预淬。 cnki