“茜素”造句

茜素染料法中,氟化物的消色作用较慢.
The bleaching action of fluorides is slow in the alizarin dye procedure.

茜素一种桔红色的晶体化合物, C14H6O2 ( OH ) 2, 用于制造染料.
An orange - red crystalline compound, C 14 H 6 O 2 ( OH ) 2, used in making dyes.

'茜'.''''.'素'. ''从该植物根中提出的一种红色染料.
A red dye obtained from the roots of plant.

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