【摘 要】
：
The lines of masked passengers boarding trains in Wuhan on April 8 had a special significance. They marked the lifting of out-bound travel restrictions after Wu
论文部分内容阅读
The lines of masked passengers boarding trains in Wuhan on April 8 had a special significance. They marked the lifting of out-bound travel restrictions after Wuhan ted the tide in its battle against the novel coronavirus epidemic following almost 11 weeks of lockdown.
其他文献
NaCO是无机盐类调质添加剂的典型.因此,该文主要以它调质后脱硫剂表现的特性进行机理研究.首次对调质石灰石煅烧特性进行了系统研究.结果表明,同等缎烧工况下,调质石灰石比基
We are living through one of the rarest times of history, as families grapple to keep loved ones safe, retain their jobs and maintain any sense of normalcy. Thi
With hs blasting on ferryboats,the city of Wuhan in Hubei Province in central China, the epicenter of the novel corona-rus disease (COVID-19) in the country, de
China has provided emergency assistance including medical supplies such as test reagents， face masks and protective suits to more than 120 countries and international organizations to combat the novel
Twelve years ago, when an earthquake struck Wenchuan, a county in southwest China, Italy was the first country to send a medical team to support the relief work
该文主要研究内容是一种用于共轨喷油系统的高速电磁阀的总体方案设计.高速电磁阀是共轨喷油系统的关键部件之一.高速电磁阀的工作压力高,要求的开启和关闭时间短,既要有良好
为了降低油耗、减少排放，均质直喷汽油机要求缸内均匀的混合气、尽可能少的湿壁量以及点火时刻火花塞周围形成有利于点火的混合气，这就需要喷嘴与发动机之间良好的匹配。三维缸
人工血泵可以为慢性心脏病病人提供长期或者短期支持,这种装置的目标是能达到与人体自然心脏相类似的功能,这就使得人工血泵的设计成为一项很具挑战性的任务。本论文致力于运