直接型油旋转真空泵λ<P> P165D 图片

p1Src=//y1.yzimgs.com/uploads/533227/20191223-183545597.jpg?watermark/2/text/5bKp5r-R6Ieq5Yqo5YyW5py65qKw6K6-5aSH77yI5q2m5rGJ77yJ5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/700/fill/I0E3QTlBOA==/gravity/SouthEast"