论文部分内容阅读
美国工业气体净化协会(IGCI)多年来收集了对除尘器各年订货额的统计数据(见附表)。该协会各成员公司所销售的除尘设备占据北美市场80％之上。由表中可以看出,按除尘器的总订货额,1974年达最高,以后有所下降,到1978年开始回升。电除尘器和袋式除尘器是除尘设备中占据绝对优势的两种除尘器。近十年来,袋式除尘器的销售额的比例稳定上升,而电除尘器则稍有下降,到1981年二者几乎相当。这种趋势
The Industrial Gas Purification Association of America (IGCI) has collected statistics on the amount of orders for dust collectors for various years (see attached table). Dust removal equipment sold by the member companies of the association accounts for more than 80% of the North American market. From the table, it can be seen that the total amount of the dust collector has reached its highest value in 1974, and has declined since then, and it has started to pick up in 1978. Electrostatic precipitators and bag filters are two kinds of dust precipitators that have an absolute advantage in dust removal equipment. In the past ten years, the proportion of sales of bag filters has steadily increased, while that of electrostatic precipitators has decreased slightly. By 1981, they were almost equal. This trend