In this paper, the classification and synthesis methods of amino-acid type amphoteric surfactant, and the progress of its application in leather industry were introduced.

本文综述了氨基酸型两性表面活性剂应用于皮革中的研究动向，并重点介绍了其分类及合成方法。

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It is a precursor in the synthesis of various amino acids, such as alanine, and of malic acid and oxaloacetic acid, both intermediates in the KREBS CYCLE.

在各种氨基酸比方丙氨酸以及苹果酸和草酰乙酸合成中作为前体。苹果酸与草酰乙酸均是三羧酸循环的中间产物。

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The sequence of nucleotides in the DNA molecule of a chromosome that specifies the amino acid sequence in the synthesis of proteins. It is the basis of heredity.

在一个染色体的脱氧核糖核酸分子中的核苷次序，其决定蛋白质合成物中氨基酸的次序。它是遗传的基础。

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But, in older animals - and, it is believed, humans - the amino acid stimulus prompting synthesis is less effective, and the process slows down.

BBC: Maintaining muscle mass is easier when young

But when the scientists boosted levels of one amino acid, leucine, the balance of synthesis and breakdown was restored.

BBC: Maintaining muscle mass is easier when young