如何看懂造船图纸(Howtoreadshipbuildingdrawings)
如何看懂造船图纸(How to read shipbuilding drawings)How to read shipbuilding drawingsFor example: HP ball flat steel, Pl8 refers to 8 mm steel plate, W, FL are T profiles of panels and panels四年级上册英语pepFB ribbe
时间:2023-07-10 热度:14℃