英仙座紧随仙后座之后.Perseus the Hero follows Cassiopeia across the night sky.直到仙后座升到北极星的正上方,猎户座才会出现在天空中.Orion won't rise until Cassipeia swings above Polaris , the North Star.说明: 我们银河系的心脏与魂魄是否在仙后座之内?Explanation: Is the heart...
自动阻风门尽管在细节上有所不同,但其设计是相仿的.The automatic choke devices are all similar, although they vary in detail.这种阻风门的部分开启可以防止混合气过浓.This partly opens the choke so that an overich mixture is prevented.其作用与上面讨论过的其它自动阻风门相似.The action is...
Waves of misery penetrated every pore.痛苦深彻骨髓。Anthracite char has poor pore structure and small specific surface area.无烟煤焦分支孔贫乏,比表面积很小.It will take several more months to pore through the volumes of documents.详细研究这大堆的文献还要...