旋片式油封真空泵 R-24SN 使用说... 上海五久自动化设备有限公司

p1Src=//y3.yzimgs.com/uploads/391770/2016118-10522513.jpg?watermark/2/text/5LiK5rW35LqU5LmF6Ieq5Yqo5YyW6K6-5aSH5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/300/fill/I0E3QTlBOA==/gravity/SouthEast"