In physics, a wave is a disturbance that transfers energy through matter or space, with little or no associated mass transport. Class 11 Physics chapter- Waves explains various aspects related to the ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果一些您可能无法访问的结果已被隐去。
显示无法访问的结果
反馈