作出贡献

The dissertation includes four parts in general.The first part gives a simpledescription of Maitland's life and his experience in the study of English legal history.

全文共分四章，第一章介绍了梅特兰的生平和他的学术历程，以及他作为英国法律史学奠基人对这一领域所作出的贡献。

As a biologist, Lamarck was equal to Darwin.

拉马克对生物学作出的重要贡献是确立了生物的自然演化的思想以及首先提出了进化理论。

Influenced by Justus Liebig he also applied his scientific and technical knowledge in practical problems, and worked for controlling industrial pollution.

864年他受命担任碱业检察员，带领检查团依据《碱业法》调查制碱厂盐酸冷凝情况。由于工作方式得当，受到厂主们的欢迎和支持。他主张延长和改进《碱业法》，试图扩大接受检查的工厂范围，为进一步治理工业污染作出了重大贡献。

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。