chitinn.几丁质；角质素Chitinozoan几丁石chitin fibre甲壳素纤维chitin shell壳chitin fiber甲壳素纤维chitinozoans几丁石,胞石chitinolytic几丁质分解的chitinovorin噬几丁菌素chitin fibers甲壳素纤维chitinization几丁化, 壳质化chitinogenous分泌几丁质的, 分泌壳质的