Thermosetting materials in when heated usually decomposition out flammable gas, formed by the fire has certain prevent flame spreading ability carbonized layers, the carbonized depends on formula.
During the process of decomposition of MRP material in mechanical processing industry, complicated arithmetic problems such as the formula manipulation are inevitable.
在机械加工行业的MRP物料分解过程中，不可避免会遇到公式处理等复杂计算问题。
3
The calculation formula of the cogging torque are derived by the Fourier decomposition and the virtual displacement method.