The concept of under-utilized resources, together with the rise of J2EE platform, gave rise to the precursor of cloud computing: application server virtualization.
空闲的资源，加上J2EE 平台的崛起，迎来了云计算的概念：应用服务虚拟化。
Proposing and using the concept of precursor field stability, the precursory observational data before moderate earthquakes on the boundaries of Henan, Sandong and Hebei are analyzed.
提出了前兆场稳定度的概念，利用前兆场稳定度的方法对中强地震前豫鲁冀交界区不同台站和不同手段的前兆观测数据进行分析。
In the course of carrying the quality education, change in concept is the precursor, quality improvement is the aim, and optimization of the quality management is the heart of the matter.
在实施素质教育过程中，转变观念是先导，提高质量是生命，优化素质教育管理是关键。
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