It is occasionally necessary to use a number system to designate the position of each ligand.有时需要用一种编号系统来标明各配体的位置.Macromolecules cannot approach the ligand owing to steric hindrance of the matrix.由于载体的立体位阻的关系,大分子化合物不能接触到...
A cavalcade processed through town.马车队列队从城里经过.The generatrix shape of tapered roller processed with centerless grinding was not line but curve one.无心磨削圆锥滚子母线的形状不是直线,而是凹曲线,分析了生产原因、影响因素,为进一步研究做好了铺垫.Key technology and metho...