一、前言: 随着祖国工农业大跃进,对內燃机等动力机械需要量日益增加,而活塞是內燃机的主要部件,但目前我国制造柴油机都含有我們目前尚感缺乏的镍元素(A1),为了适应形势的要求,我們在党的总路綫的光輝照耀下,在党的八屆八中全会精神的鼓舞下,进行了 I. Preface: With the great leap forward in the motherland’s industry and agriculture, the demand for power machinery such as internal combustion engines is increasing. The piston is the major component of internal combustion engines. At present, the diesel engines manufactured in our country contain the nickel element (Al) To meet the requirements of the situation, we conducted the brilliant demonstration of the party’s general line of eight and inspired by the spirit of the 8th Plenary Session of the 8th CPC Central Committee