Understanding the mechanisms underlying the assembly of nucleobases is a great challenge. The ability to deeply understa......

用热传导理论和弹性力学，对滑动轴承的热，力变形作了深入的理论分析，为合理确定公差与配合，保证其工作精度，提供了理论依据。......

考虑到煤尘水分低（含水1%～4%）、粒度小的特点,先利用压缩氮气为动力源实施浓相气力输送,再采用组合成型技术,即高压干粉处理工艺和低......

Nascent pectin and glucuronoxylan were prepared from membrane-bound enzymes obtained from pea epicotyls. They had previo......