1) square thin plate with free edges
边界自由方板
1.
Based upon the modal analysis by FEM, the directivity pattern of the high frequency sound field radiated by an unbaffled square thin plate with free edges is obtained by discrete Hugens′s second integral formula which is used to computing the sound field of a dipolar source.
在有限元模态分析的基础上,通过计算离散偶极子声源辐射声场的惠更斯第二积分公式,得到了无障板的、边界自由方板高频辐射声场的指向性。
3) free field boundary
自由场边界
5) two-free-boundary
双自由边界
6) free boundary flow
自由边界流
补充资料：方板
1.指公文;文书。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条