The hydrogel-metal assembly can be adapted to form a medical device, medical implant, an artificial implant, an orthopedic implant, or at least as part of a joint. The hydrogel-metal assembly is attractive for use as such implants ... D Myung,Mulr V, Beinn O.,CW Frank - US 被引量:...
the rear part of the fuselage is downwards bent to form an aircraft tail; a concave space is formed between the aircraft tail and the cockpit; a rear power unit is arranged in the space and comprises coaxial dual rotors which are driven by a second engine arranged on the aircraft tail. ...
真实情况可能被有意隐瞒?英媒披露:人类文明或将在2050年崩溃 最近,美国一家科学网站报道,现在几乎每周都有科学家在撰写报告,预测全球危险气候正越来越变得可怕。这些报告大多阐述了多碳能源方式导致了全球气温日益升高,大致在2050年之前,地球上的冰原将会消... 网易新闻 半永久性厄尔尼...