英语语法分析

Citrus peels are a promising commercial source for high -methoxyl pectin.

桔皮是一种理想的高酯果胶原料。

Aim To design and synthesize new methoxyl carbazole analogues as antitumor compounds.

目的设计合成新型甲氧基咔唑类抗肿瘤化合物。

Objective To investigate the optimal extraction technology of low methoxyl pectin from shaddock peel.

目的研究从柚皮中提取低甲氧基果胶的最佳工艺条件。