Electrophoresis is a technique that separates macromolecules according to their net electrical charge and shape.电泳是根据分子的静电荷和形状分离大分子的技术.Acetate cellulose sheet electrophoresis and electric blotting proved it to be an α1 -...
A toddler requires close supervision and firm control at all times.刚学步的孩子时刻需要寸步不离的照看，并要牢牢看紧。He was placed under a two-year supervision order.他被处以两年的监管。We ask the public to have their dogs neutered and keep them under clo...