Before you do everything,smile first. When you need some help,you should say:“Excuse me.”At the same time,if you show your unhappy face,he will be unhappy, to
An analytical solution for scattering of plane P waves by circular-arc layered alluvial valleys was derived by Fourier-Bessel series expansion technique, and th
Based on the analysis and the comparison of stress pattern analysis by thermal emission (SPATE) and remote sensing rock mechanics (RSRM), the idea to detect the
Zige Tangco (4560 m a.s.l.), located in central Tibetan Plateau, was first discovered in China to be a meromictic lake. The meromixis was caused possibly by vir