在不同的压缩空气相对湿度下，试验测定了低压铸造过程中液态铝合金氢含量的变化。
Changes in hydrogen content in liquid aluminum were measured under different relative humidity of compressed air in low pressure die casting.
对45钢力学拉伸试验后试样的内部组织结构及断口的全面分析，认为钢中存在较高含量的氢是造成钢材脆性断裂的主要原因。
The internal structure and fracture features in samples 45 steel after tensile testing is perfectly analyzed in this paper.
摘要 ： 本试验测定云杉总黄酮及其二氢槲皮素的含量，研究其抗氧化活性，为后期云杉黄酮的进一步研究提供部分理论依据。
Abstract : The purpose of this study was to determine the total flavonoids and dihydroquercetin contents in Picea asperata Mast. , and to further investigate its antioxidant activity.
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