If a proton which has no mass can behave as a particle does it follow that an electron which has mass can behave as a wave?
如果一个没质量的光子能像粒子一样，具有质量的电子能否，表现得像波一样吗？
2
Based on the principle of equivalent mass, it tests the impelling vibration in sonic wave vibration system, introduces the experiment condition and process.
为此参照等效质量原理对声振系统进行了激振试验，并对试验条件和试验方法进行了介绍。
3
The interaction of stress wave with tunnel structures in rock mass is a complex problem, which up to now has not been solved completely.