The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate.

第二种聚酰亚胺聚合物是芳香族四酸二氢化物与芳香族二异氰酸酯反应生成的。

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Main components: a variety of aromatic ketones and aromatic esters.

主要成分：各种芳香酮及芳香酯类等。

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Out of date tea leaves will be brittle and dry, rather than lush and aromatic.

过期的茶叶会变得干燥易碎，口感与味道都会明显下降。

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Meals are also accompanied by chili sauce, which is pungent, sweet and aromatic, with a powerful aftertaste.

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Served on a bed of green beans mixed with yogurt and aromatic herbs, tabaka is a showstopper.

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Based in Atlanta, Georgia Gulf manufactures chlorovinyls and aromatic chemicals as well as vinyl-based building and home improvement products.

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