本刊自本年一月起改由邮局发行。今後将逐步走向全部订阅,不办理零售的计划发行。邮局的发行数目,主要是根据订户的多少决定,其中零售只占极少部份。所以,今后零购是很困难的。需要经常阅读本刊的读者,最好长期订阅,这样就不会有中断或买 This publication was changed from the post office in January this year. In the future, it will gradually move toward full subscription, and it will not handle the planned issuance of retail sales. The number of post offices issued is mainly determined by the number of subscribers, of which retail accounts for a very small portion. Therefore, it is very difficult to make zero purchases in the future. Readers who need to read the magazine regularly, preferably long-term subscription, so that there will be no interruption or buy