crystal activity

• 晶体活动性

crystal activity的用法和样例：

例句

1. Migration of the seismic activity is found before a big event.
   发现了大震前地震活动性的迁移。
2. The activity ratios assess how efficiently the firm is using its assets.
   活动性比率衡量了公司运用它的资产的效率程度。