(页面存档备份,存于互联网档案馆) Development of a Clay-Plastic Composite Material with Good Hydrogen Gas Barrier Property 互联网档案馆的存檔,存档日期2008-08-21. Storhy Hydrogen Composite Tank
unscrewed the valve from the cylinder. By this time it was pretty clear that there wasn't any gas left. I carefully tipped the cylinder upside down, and out came