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前言以华主席为首的党中央一举粉碎了“四人邦”篡党夺权的罪恶阴谋,继承了毛主席的革命遗志,执行了抓纲治国的战略决策,吹响了向四个现代化进军的号角。数字地震仪具有许多方面的优越性,早已在国外普遍使用。(石化部在74年冬开始试验,75年投产)江苏省第六物探大队649队在76年上半年也开始使用SN338B数字地震仪,在苏北地
Foreword The Central Committee, led by Chairman Hua, smashed the evil conspiracy of the “gang of four” to usurp the party and seize power. It inherited Chairman Mao’s revolutionary behest and implemented the strategic decision of grasping the Gangchung Governing and governing the country, sounded the horn of marching toward the four modernizations . Digital seismographs have many advantages and are commonly used abroad. (Petrochemical Ministry in the 74 winter test, 75 years put into operation) Sixth Geophysical Brigade 649 Jiangsu Province in the first half of 76 also started using SN338B digital seismograph in the northern Jiangsu