The dynamic conditions of synoptic scale and local unstable stratification structure show that there are suitable conditions for the occurrence of locally developing convective systems.
天气尺度动力条件和局地层结不稳定结构都表明，此次局地强天气的发生有良好的环境条件。
Objective:To investigate the role of TIMI risk score in risk stratification and predicting outcomes in patients with unstable angina.
目的：探讨心肌梗死溶栓疗法（TIMI）危险评分在不稳定心绞痛（UA）患者危险分层及预后预测中的作用。
But it is short of further exploration in the correlation between matrix metalloproteinase and CD40L or risk stratification and predicting the value of heart incidence in unstable angina.
但在不稳定性心绞痛患者中，基质金属蛋白酶的水平与CD 40l的相关性以及与不稳定性心绞痛患者的危险度分层、发生心脏事件的预测价值方面尚缺乏进一步的探索。
Although weak stratification can also prevent heat and mass transfer, it's unstable and easy to be destroyed.
弱分层虽然也能抑制传热传质，但不稳定、容易被破坏。
Although weak stratification can also prevent heat and mass transfer, it's unstable and easy to be destroyed.
弱分层虽然也能抑制传热传质，但不稳定、容易被破坏。
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