我对CAD响往久矣,原因要从70年代初谈起。从70年代初开始,我国的一些大工程,往往国内还在准备设计,国外的事务所已送来了方案,例如北京饭店、长城饭店都是如此。送来的方案几乎达到施工图的深度,说明书很详细,一个星期都看不完。有时国外隔不多久又送来补充方案,好似不怎么花力气。为什么他们的方案又快又有根有据?原来他们从 I have been on the CAD for a long time because of the beginning of the 1970s. Since the early 1970s, some of China’s major projects have often been prepared for design in the country. Foreign firms have sent their plans. For example, Beijing Hotel and Great Wall Hotel are all the same. The plan delivered was almost as deep as the construction plan. The specification was very detailed and could not be completed in one week. Sometimes it will take less time for foreign countries to send supplementary plans. Why are their plans fast and well-founded? They turned out to be