| 1. | In infants we can also see a much more direct reaction to bodily illness of various kinds .
在婴儿身上，我们也可看到他们对于各种肉体上的疾病有更直接的反应。 |
| 2. | The directed reaction that they use produces only methanol so that costly separation are avoided .
他们使用的定向反应只生成甲醇，因此就免除了成本高的分离工作。 |
| 3. | Study on lead - free bi0 . 5na0 . 5 1 - xbaxtio3 piezoelectric ceramics by direct reaction sintering method
3系无铅压电陶瓷的性能研究 |
| 4. | Resin - polyiodides were prepared by fluidized bed method , solid and liquid polyiodides were prepared by direct reaction method
树脂高聚碘的制备方法为流动床循环法，固体和液体高聚碘都是采用直接反应的方法。 |
| 5. | The precursor method could solve the problem that the appearance of pyrochlore phase during the synthesis procedure by avoiding the direct reaction between pbo and nb _ ( 2 ) o _ ( 5 ) . furthermore it also could decrease calcination temperature and pbo volatility
采用二次合成法制备pmn - pt钙钛矿相，避免了pbo和nb _ 2o _ 5的直接反应，从而抑制了焦绿石相的生成。 |
| 6. | In this paper , theoretical analyses on fabrication of al2o3 / cu composites by directed reaction of molten metal has been carried out according to the thermodynamics and kinetics of cuo / al system , al2o3 nucleating , solidification and pushing
本文从cuo al体系的反应热力学、动力学、 al _ 2o _ 3形核机理及凝固排斥等方面对熔体直接反应法制备al _ 2o _ 3弥散cu复合材料进行了理论分析。 |
| 7. | In this thesis , as a new method of fabrication metal composites , directed reaction of molten metal ( casting process ) makes the particles - reinforced phase , the product of chemical reaction in the metal or alloy , be distributed homogenously in the matrix
本研究提出了一种制各al _ 2o _ 3 cu复合材料的新型方法? ?熔体直接反应法(熔铸法) ，它是通过金属液或合金液中发生化学反应生成增强相颗粒，并使之均匀分散于基体之中。 |
| 8. | The traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid . but there is some limits to its use because of its side reaction , strong erosion and liability to pollute the environment . molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene . in addition , several elements of affecting the reaction is researched . it is proved that molybdophosphoric acid is very active as catalyst in less addition , the product yield is quite high and the quality of reuse is quite good
缩醛(酮)合成反应的传统催化剂为无机强酸，但由于副反应多、腐蚀性强和易污染环境等缺点，其使用受到限制.用磷钼酸为催化剂，通过醛(酮)与乙二醇直接反应得到了三种缩合产物.对影响反应的诸因素进行研究,结果表明，用磷钼酸作催化剂，用量小，活性高，产品收率较高，且重复使用性能较好 |
| 9. | Abstract : the traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid . but there is some limits to its use because of its side reaction , strong erosion and liability to pollute the environment . molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene . in addition , several elements of affecting the reaction is researched . it is proved that molybdophosphoric acid is very active as catalyst in less addition , the product yield is quite high and the quality of reuse is quite good
文摘:缩醛(酮)合成反应的传统催化剂为无机强酸，但由于副反应多、腐蚀性强和易污染环境等缺点，其使用受到限制.用磷钼酸为催化剂，通过醛(酮)与乙二醇直接反应得到了三种缩合产物.对影响反应的诸因素进行研究,结果表明，用磷钼酸作催化剂，用量小，活性高，产品收率较高，且重复使用性能较好 |
