卷制鋼管32536mm,長50m,42636mm,長80m,現(xiàn)在鋼板尺寸為6m³1.2m,重0.337t,問卷制兩種鋼管用料多少張??jī)煞N管各用多少?
測(cè)量水泵對(duì)輪徑向晃動(dòng)記錄,如圖所示,求對(duì)輪的徑向晃度?