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The effectiveness of market theory tells us that stock prices fluctuate in line with the random walk model, only the price history of the historical information contained herein, which is the basis for the creation of the technical analysis of the premise - is a repeat of history, the history of the price includes all the information is a huge challenge , And most of the technical analysis of empirical studies have shown that even if technical analysis can be brought about by excess profits, excess profits that are often not considered in the transaction costs of the case emerged, whether technical analysis can provide investors with continued access to Excess profits have doubts about that.

市场有效性理论告诉我们，股票价格波动符合随机漫步模型，历史价格只包含历史信息，这对技术分析赖以成立的前提——历史是不断重复的，历史价格包含所有信息是一种巨大的挑战，而大多数对技术分析实证研究也表明，即使技术分析能够带来超额利润，这种超额利润也通常是在不考虑交易成本的情况下出现的，技术分析能否可以让投资者持续地获取超额利润是有疑问的。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。