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...
探讨了 间甲酚 含量的容量分析方法.The determination ofm - cresol content by brominating volumetric method was investigated.利用间甲酚紫作指示剂定量地测定食醋中总酸的含量.This paper suggested am - cresol purple, which could determine quantitatively the content...
Physical examination showed xerosis and pigmentation on his low extremities, and the skin touched hard.皮肤科检查示双下肢皮肤干燥、僵硬伴明显色素沉着.In the past, the region had been protected by its forbidding geography and the extremities of...