据MIT网站报道,MIT的科学家设计了一种微流体芯片可以测量单个细胞的密度和质量。 How dense is a cell? Combining an ancient principle with new technology, MIT researchers have devised a way to answer that question. More than 2,000 yea ...
英语参考答案 V. The area of Massachusetts - 10,555 square miles (in 2002); the area of England - 50,327 square miles (in 1971). VI. Liverpool is in northwest England, on the Mersey River; Marseilles is in southeast France, on the Mediterranean Sea; Vienna is the capital of Austria, in t ...