VRDV Vacuum Retard Delay Valve是什么意思

用法例句

Firstly,a system made up of nonlinear springs,dashpot and mass is used to simulate the dynamic interaction between soil and geogrid,and the thin layer element is used to simulate the dynamic deformation behavior of the soil geogrid interface.

采用非线性弹簧 -阻尼延迟器 -质量块系统模拟土工格栅与土动力相互作用 ,薄单元模拟土工格栅与土接触面的动力变形特性 。