实验室规模的卷对卷扁平带轮（大... 世联博研（北京）科技有限公司

p1Src=//y2.yzimgs.com/uploads/423011/2020320-93254862.png?watermark/2/text/5LiW6IGU5Y2a56CU77yI5YyX5Lqs77yJ56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/400/fill/I0E3QTlBOA==/gravity/SouthEast"

aa