Observers have recently found in the Universe giant voids about 500,000,000 light-years across.观察员最近在宇宙中发现了直径约5亿光年的巨型空洞。Small voids and openings occur between grains of soil.在土壤颗粒之间就有着许多微小的空隙和洞隙.Poor wetting would produc...
Poor wetting would produce voids at the interface.浸润不良会在界面上产生孔隙.Tank Linings and pipe Coatings: Ballast and potable water tanks; Bilges, wet voids and drainage pipes.储罐衬里和管道用涂料: 压载水舱和饮水舱; 舱底 、 湿空舱和排水管.Small voids and ope...