With the development , of time , texturing method also embodies different appreciative features.随着时代的发展, 皴法也体现出各自不同的审美特征.The characteristics and applications of MPS texturing machine by Barmag are described.描述了德国巴马格公司的MP...
纤维素是带有好多羟基的不幼链环型布局的聚合物.Cellulose is a very polyhydroxylated of long - chain - type structure of the polymer.使用的催化剂对醇 羟基 的氧化具有高度的选择性并有很高的转化率.These reactions catalyzing oxidation of alcohol - OH groups have high yield and ...