Advances in research on pharmacodynamics and chemical conversion of catalpol;
梓醇的药效学及化学转化研究现状
Investigation on stannate chemical conversion surface treatment techniques for magnesium alloy;
镁合金锡酸盐化学转化表面处理工艺研究
A chromium-free chemical conversion coating for Mg-Li alloy by phytic acid solution;
镁锂合金无铬植酸化学转化膜研究
The main factors affecting the preparation of magnetic cationic exchange resin by chemical transformation were experimentally studied in detail.
对化学转化法制备磁性阳离子交换树脂的主要影响因素进行了较详细的实验探讨。
Phosphate and stannate chemical conversion coatings on ZK60 magnesium alloy;
ZK60镁合金磷酸盐及锡酸盐化学转化膜
Preparation technology of black chemical conversion coating for aluminum;
铝的黑色化学转化膜制备工艺
Study of chemical conversion coatings on magnesium-lithium alloy;
镁锂合金化学转化膜层的研究
Effect of chemical conversion film on corrosion resistance of magnesium alloy;
化学转化膜对镁合金抗腐蚀性的影响
Process of chrome-free chemical conversion film on aluminum alloys;
铝合金表面无铬化学转化膜工艺研究
Factors affecting properties of chemical conversion film on brass;
影响黄铜化学转化膜质量的因素
The present status of chromium-free chemical conversion coatings of magnesium alloys is reviewed.
综述了国内外镁合金无铬化学转化膜研究现状,通过分析不同转化液的配方、主要处理工艺及相应转化膜的组成、结构、形貌、膜层的耐蚀性能,指出现有无铬转化技术存在的不足,并展望了无铬化学转化膜的未来发展趋势。
The optimum conditions of preparation for magnetic cation exchange resin with chemical transformation were found by orthogonal test, that is, impregnating the resins with a mixture iron salts solution that the ratio of Fe 3+ and Fe 2+ was l∶2 for about 90 min at 50 ℃.
通过正交试验确定了用化学转化法制备磁性阳离子交换树脂的最佳条件 ,即将树脂在 50℃浸渍于 Fe3 +与 Fe2 +摩尔比为 1∶ 2的混合铁盐溶液中 90 min,然后加入 2 mol/ L的 Na OH溶液将铁离子转化为 Fe3 O4 晶体 ,使其均匀地分布在树脂表面及嵌入树脂的大孔结构中 ,Fe3 O4 与树脂之间不存在化学作用。
The magnetic anion exchange resin was successfully prepared with chemical transformation.
利用化学转化法成功地制备了磁性阴离子交换树脂，对影响所制备树脂质量磁化率的几个主要因素进行了探讨，确定了最适制备条件，并对这类磁性树脂的结构和性能进行了研究。
In the process of preparation of magnetic anion exchange resin by mains of chemical transformation,the main factors affecting the content of Fe 3+ ,Fe 2+ in D201 resin and magnetic susceptibility of magnetic resin were studied.
探讨化学转化法制备磁性阴离子交换树脂过程中几个主因素对处理后树脂中 Ｆｅ２＋ 与 Ｆｅ３＋ 的含量及质量磁化率的影响，找出磁性树脂质量磁化率与 Ｆｅ２＋ ， Ｆｅ３＋ 比例之间的关系，确定最合适的制备条件。
Study on Chemical Conversion Coatings and Electroless Depositing Ni-P Alloy on Chemical Conversion Coatings of Magnesium Alloys
镁合金化学转化及化学转化膜上化学镀镍的研究
Chemical alteration of a substance within the body, as by the action of enzymes.
生物转化体内物质的化学转化，如通过酶的作用
The Research on Chemical Polishing and Chemical Conversion Coating on AM60 Magnesium Alloy
AM60镁合金化学抛光及化学转化膜的研究
Methodologies for Chemical Utilization of Carbon Dioxide
温室气体二氧化碳化学转化与利用的方法学
Study on Photodegradation of Profenofos in Aqueous Solution;
丙溴磷在水溶液中的光化学转化研究
Study on Technology of Chrome-free Chemical Conversion Treatment of Magnesium Alloys;
镁合金无铬化学转化处理工艺的研究
The Novel Chromate-free Surface Pretreating Approaches on Metal Surfaces for Corrosion Protection;
金属表面新型无铬化学转化膜的研究
Study on the Technology of Stannate Conversion Coating for Magnesium Alloy;
镁合金锡酸盐化学转化处理技术研究
Theoretical Study on the Mechanism and Kinetics of HFCs Degradation Reactions in Atmosphere
HFCs在大气中化学转化的微观机制
Chemical Conversions of Biomass into Aroma Chemicals--the Use of Lactic Acid
生物质化学转化制备香料——乳酸的利用
Performance of Oxalate Chemical Conversion Coating on Magnesium Alloy
镁合金表面草酸盐化学转化膜的性能
Chemical energy may be converted to heat.
化学能可以转化为热能。
Food is broken down by chemicals.
化学物质引起食物转化。
Reforming Teaching Methods to Improve Students Understanding of Mathematics;
转化、优化、变化、类化与数学素质培养
In the discussion in the duty chemistry teaching“study lives sleepily”transformation
探讨中职化学教学中“学困生”的转化
(mechanics) the rate of change of velocity.
（机械学）周转变化的速率。
The Current Situation of Senior Chemistry Learning Disability and Transformation Ways Research;
高中化学学困生现状及转化措施研究
On the Transform Ratio of Langue in Training Language Consciousness;
谈信息转换教学法的言语转化率问题