硼硫酸钠

These methods include hydrogenation in high-pressure,reduction by hydroborates and reduction by dithionite. This article studied these methods, especially optimized the technology of hydrogenation in normal pressure and reduction by hydroborates.

研究了常压氢化法、加压氢化法、硼氢化物还原法及连二亚硫酸钠还原法等制备四氢叶酸，并优化了常压氢化法、硼氢化物还原法的工艺条件。

To prepare THFA from folic acid , catalytic hydrogenation and high-pressure hydrogenation, reduction by borohydride and reduction by dithionite were investigated. Especially, the technology of catalytic hydrogenation and reduction by borohydride were optimized.

本文研究了常压氢化法、加压氢化法、硼氢化物还原法及连二亚硫酸钠还原法制备四氢叶酸，并优化了常压氢化法、硼氢化物还原法的工艺条件。

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。