The experimental results of Armco iron, copper, cermet and graphite are given.给出了Armco铁 、 铜 、 金属陶瓷和石墨的测试结果.Lead in cermet - based trimmer potentiometer elements.金属陶瓷质的微调电位器中的铅含量.The technology and property of nanometer c...
Tay认为学徒制是培养合格机械师的最佳方式.Tay contends the apprenticeship approach produces precisely those kinds of people.也许中世纪的学徒制有值得借鉴的东西.Maybe there was something to apprenticeship in the Middle Ages....