衡量一个物质的酸碱性的方法是pH值的大小。
The way of measuring how acidic or alkaline a substance is a scale called pH.
纤维球滤料的使用寿命与运行环境有关，包括水的温度，酸碱性以及每天的处理水量。
The service life of the fiber ball filter is related to the operating environment, including water temperature, pH value and daily water treatment.
这些将为柠檬酸碱性镀铜的生产实践提供很好的指导。
Such data would be valuable for the process control and optimization during citrate alkaline copper-electroplating.
六组分过渡金属氧化物催化剂的表面酸碱性测定。
The surface acidity or basicity of six-component transition metal catalyst was studied.
在酸碱性土壤中，磷主要以植物难以吸收利用的难溶性二价或三价阳离子的形式存在。
In acid and alkali soil, there are mainly indissoluble bivalent or trivalent phosphates, which cannot be utilized by plants.
主要探讨了电解液酸碱性对淀粉氧化程度的影响，并从理论上解释了其原因。
In the thesis, the effects the acidity and alkalinity of electrolyte on degrees of starch oxidation were discussed and theoretically expound the reasons.
提出目前存在着管线腐蚀严重、水的酸碱性不稳定等问题及解决的方法。
Some problems, such as serious pipe corrosion and unstable acid-base property, and the solutions are presented.
本文还用此观点讨论了一些单质和化合物的酸碱性质。
The acidic-basic properties of simple substances and compounds are discussed from this viewpoint.
主要从有机化合物的结构出发，分析和判断了电子效应、杂化方式及空间效应等因素对有机分子酸碱性的影响。
From structure of organic compounds, this paper analyses and discusses impact of acids basing activity of organic molecules about electronic effect, hybrid method and steric effect.
分别使用纯水、甲醇溶液、氨水等试剂与四氯化钛成烟，对烟雾的酸碱性及红外衰减性能进行了实验研究。
Acidity and infrared attenuation ability of water, methanol and ammonia using titanium tetrachloride as liquid smoke agent were studied in detail.
因其化学性质的稳定，具有出色的耐酸碱性、色牢度和抗氧化性。
Due to the stability of its chemical properties, it has excellent acid and alkali resistance, color fastness and oxidation resistance.
本文在充分分析厌氧消化体系内影响酸碱性的诸多因素和过程的基础上，建立了消化液的电荷平衡方程。
The ionizing equilibrium equations for anaerobic digesting slurry were set up based on the process and factor analysis affecting the acidity-alkalinity in anaerobic system.
发泡密度高且采用连续发泡式发泡，具有优良的耐酸碱性，耐久性。
Continuous foaming process with high foaming intensity; It has excellent chemical resistance and abrasion resistance.
催化剂的酸碱性可能是影响催化活性的关键因素。
The acidity and basicity of catalyst might be the key factors that influenced the catalytic activities.
该涂料粘附力强，具有优异的耐酸碱性和耐水性，生产工艺简单、施工方便、成本低廉等特点。
The water based coating has many of advantages, for example: good adhesive, water resistant, cheap, easy synthesis and construction.
通过微型电炉实验，研究了膨胀型钢结构防火涂料的酸碱性对其防火隔热性能的影响。
The influence of pH value of dilatant fire retardant coatings for steel structure on its fireproofing performance is studied by using a micro electric furnance.
产生上述的差异主要与煅烧对催化剂颗粒度、分散性及酸碱性的改变有关。
That the calcination process will change the graininess, dispersity and acidity-basicity of the catalyst can explain the discrepancy of the above phenomena.
释放一定的负离子，调整水的酸碱度使水呈弱碱性。
Such process can also release anions , which can adjust the pH of water to slight basic.
浸取剂的酸碱性是影响电解锰渣浸出毒性的主要因素。
The pH value of the leaching agent is main factor affecting the leaching toxicity of EMR.
必要元素中，与食物的酸碱性有密切关系者有八种：钾、钠、钙、镁、铁、磷、氯、硫。
Among the essential elements, that have close relationship with the acidity and alkalinity of food, are potassium, sodium, calcium, magnesium, iron, phosphorus, chlorine, and sulfur.
通过增加各种添加剂，使聚氨酯鞋底在耐磨、耐油性、电绝缘、防静电和耐酸碱性能方面有了很大的提高。
By adding various additives, properties of new PU sole such as abrasion resistance, oil resistance, electric insulation, antis.
经甲醇处理后，具有良好的耐热水洗涤性、耐酸碱性，部分物理机械性能有所改善。
It has good acid and alkali resistance and hot water washing resistance. Part of the physics mechanical properties are therefore impro...
经甲醇处理后，具有良好的耐热水洗涤性、耐酸碱性，部分物理机械性能有所改善。
It has good acid and alkali resistance and hot water washing resistance. Part of the physics mechanical properties are therefore improved.
pH值是溶液酸碱性的量度。
按此机理，烯烃的质子化是酸碱反应过程。因此，催化剂的酸性和烯烃的碱性均较强时对反应是有利的。
According to the mechanism, olefin protonation is a process of acid-alkali reaction, so the reaction is easy to happen when the acidity of catalyst and the basicity of olefin are very strong.
本发明提供一种改进的酸或碱性成份的缓释体，可调节胃肠系统局部的酸碱度。
The invention provides an improved sustained release carrier of acid or alkali components, which can regulate local pH of a gastrointestinal system.
本发明提供一种改进的酸或碱性成份的缓释体，可调节胃肠系统局部的酸碱度。
The invention provides an improved sustained release carrier of acid or alkali components, which can regulate local pH of a gastrointestinal system.
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