The increase in both power and packing densities in power electronic devices has led to an increase in the market demand......

黄麻是天然韧皮纤维,由纤维素、半纤维素、木质素、果胶、脂肪、灰分和树胶组成。黄麻纤维很长,是一种天然长丝纤维,手感柔软,光泽......

The retention and drainage performances of microparticle retention system were studied in this paper, through measuring ......

Mechanical pulps are widely used in the production of newsprint, and resin is the main component of wood extractives in ......