The deformation of rock mass takes on time-dependent effect after its excavation; and the instaneous mechanical and rheological mechanical responses of rock mass vary greatly in some degree.
巖体开挖卸荷产生的变形具有时间效应,其瞬时力学及流变力学响应都会有一定的变化。
The study is among the first to use samples from normal breast tissue to determine whether there is a time-dependent effect on breast cancer risk, she said.