当前,全世界正在经历着一场范围广阔的变化,这个变化也是一场巨大的革命,其深刻有力的程度和所包括的地域之广,是人类历史上前所未有的。在这情况下,每个研究工作者都深感力不胜任,深感过去老一套的方法不再能适应探讨新问题的要求。当然,以上所说的这几句话,早已是人们熟知的事实,我在这里并不是想再作无谓的重复,也不是想进行什么大 At present, the world is undergoing a wide-ranging change. This change is also a huge revolution. Its profound strength and geographical coverage are unprecedented in human history. Under such circumstances, each researcher is deeply impressed by the fact that the old method of the past can no longer meet the requirements of exploring new problems. Of course, these few words mentioned above are already well-known facts. I am not here trying to make unnecessary repetitions nor do I want to make any big