| 1. | Sulfonic acid group sulfo group
磺酸基团 |
| 2. | Sulfonic acid group , sulfo group
磺酸基团 |
| 3. | Determination for strong - base group , weak - base group and weak - acid group exchange capacity of acrylic type anion exchange resins
丙烯酸系阴离子交换树脂强碱基团弱碱基团和弱酸基团交换容量测定方法 |
| 4. | Zwitterion an ion with both a positive and a negative charge . amino acids and form zwitterions : the amino group has the form - nh3 + and the acid group is ionized as - coo -
两性离子：既带有正电荷又带有负电荷的离子。氨基酸就是这样一种离子：氨基基团为- nh3 +而羧基端为- coo - 。 |
| 5. | Treatment was effectie with serum folate concentrations increasing by 576 % and plasma homocysteine falling by 26 % for the folic acid group compared with placebo
这句话没翻译。试译：叶酸治疗组与安慰剂组比较，血清叶酸浓度增加576且血浆同型半胱氨酸水平下降26视为治疗有效。 |
| 6. | These glycosaminoglycan ( gag ) chains are long , linear carbohydrate polymers that are negatively charged under physiological conditions , due to the occurrence of sulphate and uronic acid groups
这些粘多糖（ gag ）链是长条线状的碳水化合物聚合体，在正常生环境下，由于硫酸根和糖醛酸根的存在而处于负电位。 |
| 7. | A series of near roundness cds nanoparticles with a particle diameter of 3 ~ 6nm have been prepared by controlling the concentration and proportion of reactants and adopting sodium hexametaphosphate as stabilizing agent . the studies demonstrate that these particles present obvious quantum size effect and an appropriate excess of cd2 + ion and hexametaphosphoric acid group polysnion are helpful to the dispersion and flame capability ' s improvement of particles . another series of near roundness monodisperse au nanoparticles with a diameter of 12 . 3nm was prepared via sodium citric acid deoxidizing auric chloride acid
利用六偏磷酸钠作为稳定剂，通过控制反应物的浓度及比例，制备了粒径为3 6nm 、呈近似球形的cds纳米颗粒，光谱测试结果表明，颗粒具有明显的量子尺寸效应，适当过量的cd ~ ( 2 + )离子以及六偏磷酸根聚阴离子有助于颗粒的分散并提高其发光性能；采用柠檬酸钠还原氯金酸，制备了接近球形、平均粒径约为12 . 3nm的单分散体系au纳米颗粒；采用wessling的前驱聚合物法获得导电聚合物ppv前驱体。 |
