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本刊1984年第2期中登载的小资料:“屋顶通风器”、“Burt排气通风器”二文后,陆续收到许多单位来信,询问国内有没有这种产品,并准备在工程中选用。现将所了解到的情况,向读者介绍一下:
In the second article of the 1984 issue of the “Small Roof Ventilator” and “Burt Exhaust Ventilator”, a number of letters were sent to many companies asking if there is any such product in the country and they are ready to be used in the project. . Now we will introduce the reader to the following situation: