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两性物质，既与酸也与碱发生反应生成盐。An amphoteric compound reacts with both acids and bases to form salts.

蛋白质习性又像酸又像碱，因此说它是两性的。Proteins behave either as acids or bases and are said to be amphoteric.

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该体系由单一两性表面活性剂和黏土稳定剂组成。The new system is made of single amphoteric surfactant and clay stabilizer.

他们的氧化物通常是两性的，和酸、碱都能反应。Their oxides are frequently amphoteric , and react with both acids and alkalis.

在实验过程中落叶松单宁两性水处理剂的合成主要分为三个阶段。The synthesis of larch extract tannin amphoteric water treatment agent was divided into three phases.

以丙烯酸、二甲胺、环氧氯丙烷为原料，通过曼尼希反应制得两性离子单体。Amphoteric monomer is prepared with acrylic acid, dimethylamine, and chloroethanol by Mannich reaction.

以可生成多核羟桥络离子的两性金属盐NT-2为交联剂。The crosslinker used is an amphoteric metal salt, NT-2, capable of forming polynuclear olation complex ion.

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等电点的测定结果证实了该三元共聚物具有明显的两性特征。The results of the isoelectric point show the terpolymers to have the observable amphoteric characteristic.

已知在液态HF中，也能说明两性行为溶剂分解或络合物形成作用的反应。Reactions in liquid HF are known that illustrate also amphoteric behavior, solvolysis, or complex formation.

通过有机合成反应，在实验室制得符合条件的两性离子型表面活性剂。A qualified amphoteric ionic surface active agent is achieved in a lab through an organic synthetic reaction.

本文在理论上研究了单轴晶体中的光束传输和正负折射现象。In this thesis we investigate the beam propagation and amphoteric refraction in a Uniaxially anisotropic crystal.

在上部地层选用两性离子聚合物钻井液、中下部地层选用聚磺钻井液。Amphoteric polymer mud and polymer mud with sulfonated additive are used respectively in top and bottom formation.

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利用静态吸附方法，研究两性离子交换树脂处理含锌的废水。The treatment to Zincic waste water by amphoteric ion exchange resin was investigated by static adsorption method.

研究了两性淀粉对桉木化机浆中性施胶、桉木化机浆的增强和助留的影响。The results indicate that amphoteric could increase the sizing degree of eucalyptus chemimechanical pulp significantly.

用其鞣制的植鞣猪皮软面革，柔软、丰满、有弹性、粒面效果好。The pigskin shoe leather tanned with amphoteric vegetable extract is soft, full, elastic, and possesses good grain effect.

用互贯法合成了不同交联度的强碱弱酸两性树脂，考查了树脂交联度对两性树脂脱盐抗污染的影响。The influence on desalination and anti-pollution by the different cross-linking degree of Amphoteric resins was investigated.

甜菜碱表面活性剂的烷基碳链的长度对其表面活性及其它性质有不同程度的影响。The length of alkyl, carbon chain about betaine type amphoteric surfactant affects its surface activity and other properties.

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两性离子交换纤维还具有洗脱容易，洗脱液用量少的特点。The amino acids on amphoteric ion exchange fiber are easy to be eluted and a small amount of elution reagent is therefor needed.

对阳离子、阴离子、两性和非离子表面活性剂对水性油墨胶体稳定性的影响进行了探讨。The effects of cationic, anionic, amphoteric and nonionic surfactants on the colloid stability of water-based inks were studied.

研究发现，实验所制得的改性聚丙烯酰胺是一种低分子量、较高电荷密度的两性聚丙烯酰胺。Experiments showed that modified PAM is a kind of amphoteric PAM with low molecular weight and higher density of electric charge.