以下为句子列表：
英文: As expected from the reaction mechanism, the carboxyl groups of aspartic and glutamic acid residues were not modified, while the amino groups that could react with the activated peptides were concomitantly protected by formylation.
中文: 如反应机理所预测的那样，天门冬氨酸和谷氨酸残基未被修饰，而能与活性肽反应的氨基则同时被甲酰化保护起来。
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英文: Determination of end carboxyl content in PET chip using photometric method was discussed, the optimiza tion of measuring condition and parameters such as sample weight,concentration of titrant, blank of solvent were stud ied.
中文: 论述采用光度法测定聚酯切片的端羧基，对称样量、滴定剂的浓度、溶剂的空白等测试条件和参数进行优化选择。
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英文: In the procedure, carbon nanotubes were oxidized by nitric acid and then neutralized with NaOH to create carboxyl surface groups which were used to adsorb Ni(superscript 2+) ions, thereafter the adsorbed Ni(superscript 2+) ions were chemically reduced int
中文: 碳纳米管经硝酸氧化和碱中和后表面生成羧基，利用羧基吸附镍离子，之后吸附的镍离子被化学还原为镍的纳米微粒并成为化学镀镍的催化活性中心。
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英文: Sailuluo, carboxyl methyl cellulose that, nylon series products Lu:yisuan, surface active agent, bringing alternative amides size, polyimide, plastics processing. Mode of operation : manufacturing.
中文: 赛璐珞，羧甲基纤维素纳，尼龙系列产品，氯乙酸，表面活性剂，聚砜酰胺浆液，聚酰亚胺，塑料加工。经营方式：制造。
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英文: The amount of catalyst can be reduced by selecting nice solvability catalyst, cutting down the remnant carboxyl amount of esterification and elevating polycondensation temperature.
中文: 选择溶解性能好的催化剂，降低酯化残存羧基量，提高缩聚温度，可减少催化剂用量。
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