This paper will introduce progressive die of the commutators for micromotor.本文将就微型马达精密换向片的量产模具介绍说明.A novel harmonic micromotor actuated by force was proposed, whose basic operating principles were also described.提出了一种基于静...
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 ...