Methods: Using DE52 ion exchang method.
方法：应用DE52离子层析法。
The defaults in heat-exchang system for medical oxygen , the improvements and the effect obtained are introduced briefly.
简要介绍了医用氧换热系统存在的缺陷，所采取的改进措施及所取得的效果。
Trapped electrons by ion acoustic waves oscillate in wave potential well, and exchange energy with waves frequently. The exchang…
我们认为由于大幅度离子声波捕获了电子，波-粒子相互作用导致离子声波幅度沿轴向呈现周期性起伏。
According to stages, we test the stochasticity of Shanghai Stock Exchang in this paper, then make a conclusion that the market is efficient (weakly).
分阶段检验上海股市的随机性，从而得出上海股市有效(弱式)的结论。
From the view of macro economy, the authors analyse the mechanism that how gross national product(GNP), commodity prices, inflation, interest ate and exchang rate etc. influence stock market.
宏观经济的角度出发分析了国民生产总值、物价、通货膨胀、利率和汇率诸因素对证券市场影响的机理，同时也从反方面分析了证券市场对宏观经济的反作用。
From the view of macro economy, the authors analyse the mechanism that how gross national product(GNP), commodity prices, inflation, interest ate and exchang rate etc. influence stock market.
宏观经济的角度出发分析了国民生产总值、物价、通货膨胀、利率和汇率诸因素对证券市场影响的机理，同时也从反方面分析了证券市场对宏观经济的反作用。
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