| 1. | Study of surface acidity basicity of cuo - al2o3 with microcalorimetric technique
3催化剂的表面酸碱性质 |
| 2. | The ph - value and buffering capacity of rice - straw and properties of rice - straw mdf
稻草原料酸碱性及稻草中密度纤维板的性能 |
| 3. | Test method for acidity - alkalinity of halogenated organic solvents and their admixtures
卤化有机溶剂及其添加剂的酸碱性测试方法 |
| 4. | Characteristic of ammonia volatilization of percarbamide in different acidity and alkalinity soils
过碳酰胺在不同酸碱性土壤上的氨挥发特性研究 |
| 5. | Characterization of waste - leaching behaviour tests - influence of ph on leaching with initial acid base addition
废弃物特性描述.渗出特性试验. ph值对初始渗出酸碱性添加物的影响 |
| 6. | Characterization of waste - leaching behaviour tests - influence of ph on leaching with initial acid base addition ; german version cen ts 14429 : 2005
废弃物特性描述.过滤性能试验. ph值对过滤酸碱性添加 |
| 7. | The previous literature on factors determining soil quality changes mainly focused on the natural processes of soil quality change , while socio - economic and policy factors tend to be neglected
另外，土壤ph值变化趋势值得关注。除华北地区的土壤酸碱性改善外，长江中下游和东北地区存在酸化倾向。 |
| 8. | This text is in the illumination to its rubia cordifolia l . pigment , temperature , dissolving , acid sealing , the characteristics in many aspects , such as food additive , etc . have carried on systemic research
摘要对其茜草果实色素在光照、温度、溶解性、酸碱性、食品添加剂等方面的特性进行了系统性的研究。 |
| 9. | The average soil fertility rose in the north china plain and mid - lower yangtze river regions , and decreased in the northeast . additionally , although the north china plain saw an improvement in soil ph - value , acidification of the soil increased in the other regions
土壤肥力数据的分析结果表明，样本总体而言，从80年代初到2000年，除土壤速效钾下降和土壤酸碱性有所退化外，农业上壤的有机质、全氮和速效磷平均含量都增加了。 |
| 10. | Many buildings " service life has come into old age . companied with aging and disrepairing of structural members , and suffering high temperarure , high moisture , acidic or alkaline gas from outside , the reliability and safety of industrial mill buildings have depressed severely
伴随着各类结构构件的老化、破损程度不断加剧，甚至受到外界高温、高湿、酸碱性气体等特殊环境的影响，这类工业厂房结构可靠性及安全性已严重降低。 |
