preliminary tremors中文什么意思

初期微震

初始微震

• preliminary:    adj. 1.预备的；初步的，初级的 ...
• tremor:    n. 震颤；战栗，发抖；惊恐；颤音； ...
• first preliminary tremors:    第一次初期微震

例句与用法

1. Tremors are caused by p and s shock waves and are also called preliminary tremors .
   地动是由P冲击波和S冲击波引起的，也称为初期微震。
2. Tremors are caused by p and s shock waves and are also called preliminary tremors
   地动是由p冲击波和s冲击波引起的，也称为初期微震。