The man bummed through the West.那汉子流浪着穿过西部地区.The bum promptly bummed two dimes off an old lady.他随即向一位老妇人讨了两个十美分的硬币.I bummed around Europe for a year before university.我在欧洲漫游了一年才上大学....
The man bummed through the West.那汉子流浪着穿过西部地区.I was really bummed out that there were no tickets left.没有票了，我非常恼火。The bum promptly bummed two dimes off an old lady.他随即向一位老妇人讨了两个十美分的硬币.I bummed around Europe for a year befo...
Their faces were blackened with soot.他们满脸煤灰。Soot is the product of the imperfect combustion of fuel.煤烟是燃料不完全燃烧的产物.Soot is usually the product of the imperfect combustion of fuel.煤烟通常是燃料不完全燃烧的产物....
详细阐述了传统铝钢压焊和钎焊在控制金属间化合物层厚度方面的优势,并且指出了其在工业实际生产中的不足.The thickness the intermetallic compound between steel and aluminium theaffect the properties of the dissimilar joint.拥有国际上最先进的钢 格板 自动压焊机.The company has held the advance...