tonian中文什么意思

拉伸纪

• nonlinear new-tonian fluid:    广义牛顿流体

例句与用法

1. Since the boundary conditions are usually regarded as constraints , we first give a brief review on the usual method for the hamil - tonian description of physical system with constraints , i . e . the dirac method
   由于边界条件通常是被当作约束来处理的，所以我们在第一章首先对处理约束系统量子化问题常用的dirac方法作了简单的回顾。

百科释义

The Tonian (from Greek tonas, "stretch") is the first geologic period in the Neoproterozoic Era and lasted from Mya to Mya (million years ago). Instead of being based on stratigraphy, these dates are defined by the ICS based on radiometric chronometry.