摘要：小琼：3月是个激动人心的月份!回顾在旧金山歌剧院首演的歌剧《红楼梦》跨越太平洋登陆香港的过程,实在是颇为惊险刺激。小薇：去年你在这个专栏里介绍了这部歌剧作品从委约到物色作曲家、编剧、导演、舞美以及服装设计师的过程。然而为了将一部歌剧制作搬上舞台,还需要上百人的共同参与!

摘要：A preliminary feasibility study was set up for the HNBM standard system. By introducing the set theory and basic methods of the solid geometry and adopting the Verman three-dimensional structure ideology innovatively, the standards system of Hainan National Breeding and Multiplication (HNBM) was studied with the four-dimensional structure and integration by combining with the time dimension. The four-dimensional structure standards system will be useful for guiding the construction of the HNBM standards system, carrying on the division of labor and realizing the dynamic development of the standards system. The standards set of HNBM helps to computer programming and information management.

摘要：The parametric part assembly generation method is presented. Based on the parametric part generated by means of constructive-element, through interactively inputting the relationships of the location and the assembly, and by compiling operations like movement and rotation, the assembly drawing is created so as to implement the occurrence of the parameterizations of the assembly and the part drawing. The data structure of the assembly part and the key technologies of hidden line removal in the implementation of assembly process, etc. , are described in detail.