英语语法分析

Nonnatural amino acid 3 (4 thiazolyl) D, L alanine hydrochloride and its four intermediates were synthesized.

合成了非天然氨基酸3（4噻唑基）D，L丙氨酸盐酸盐及其四个中间体。

With another, valine, the excess was 23% and with alanine, 20%.

另一种缬氨酸超出了23%，丙氨酸则是20%。

In them, the increments of alanine, valine, glutamic acid, proline, glycin and serine were considerable.

其中，尤以丙氨酸、缬氨酸、谷氨酸、脯氨酸、甘氨酸、丝氨酸含量的增加相当明显。