A new method evaluating the properties of scale inhibitor, the hard scale determination, is introduced.
介绍了硬垢测定法的原理与方法,测定了高相对分子质量聚丙烯酰胺和不同聚合度马-丙共聚物的阻垢性能并与垢量法的测定结果进行了比较,从分子结构和粒子间相互作用的角度讨论了阻垢过程对阻垢剂的相对分子质量要求。
Chemical Clean of Some Special Compound Hardened Filthy;
对一种特殊复合重硬垢的化学清洗对策
Hard water furred the kettle.
硬水使水壶生了垢。
Hard water furs the kettle.
硬水使水壶生水垢。
A hard deposit formed on the interior of a wine bottle as the wine matures.
酒垢酒酿熟后在酒瓶内部生成的硬的沉积物
their tough, hostile faces, smirched by the grime and rust(Henry Roth)
他们生硬、敌视、沾满污垢和铁锈的脸庞(亨利 罗斯)
Preparation of Scale Inhibitors Adapting to High Hardness, High Alkalinity and High pH;
耐高硬度、高碱度、高pH值阻垢分散剂的研制
Study of the corrosion-scale inhibitor used in higher hardness and higher alkaline water system
高硬高碱循环冷却水缓蚀阻垢剂的研究与应用
Research on Multiple Chemicals Applicable to Water with Low Hardness and Alkalinity
适合低碱低硬度水的复合缓蚀阻垢剂的研制
Development of corrosion and scaling inhibitors suitable for circulating water systems with high hardness and high alkalinity
高硬高碱循环水系统缓蚀阻垢剂的开发
They help remove tarnish and other corrosion from metals; they also remove hard water deposits, and discoloration and corrosion from metals.
它们可用于去除金属制品的污垢和锈蚀，使其恢复光泽，也可以除去硬水的水垢。
The water here is so hard that all the pans fur up after a single use.
这里的水质很硬，所有的锅用了一次以后都生了水垢。
their tough, hostile faces, smirched by the grime and rust(bHenry Roth)
他们生硬、敌视、沾满污垢和铁锈的脸庞(b亨利 罗斯)
The performance of synergistic scale inhibition was investigated in different water temperature, magnetic field intensity, water hardness and concentration.
研究了不同温度、场强度、质硬度及加药量下的协同阻垢性能。
The public desires water which is low in hardness and total solids, noncorrosive, and non-scale-forming.
人们希望水的硬度及固体含量都低，无腐蚀性，不生成水垢。
Within 24 hours, plaque can harden to form tartar, which can only be removed by a professional.
24小时内，牙垢膜便会硬化，形成牙石，必需由牙医清除。
Preparation and Performance Study on Scale Inhibitor and Dispersion in Industrial Waste Water with High Hardess, High Scale, High pH;
耐高硬度、高碱度及高pH值阻垢分散剂制备及其性能测试研究
A hard mineral coating that forms on the inside surface of boilers, kettles, and other containers in which water is repeatedly heated.
锅垢在锅、壶和其它盛水器皿中经反复加热后在容器内壁形成的硬矿物质层
The effect of diffusion of soil removal was demonstrated with polyester film and radio-tagged stearic acid.
污垢去除中的扩散效应，是用聚酯薄膜和放射性标志的硬脂酸来进行测试的。