叶上表皮_有道手机词典

1.叶上表皮细胞常呈乳突状。
The cells of upper epidermis are often papillae.
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2.叶上表皮有盐腺；
Salt glands were observed on epidermis.
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3.同一叶片其下表皮气孔密度大于上表皮，试管苗与土培苗两者叶片下表皮气孔密度差异不显著。
Stomata densities of same type leaf under epidermal are higher than upper epidermal, but were not significantly different between test-tube seedling and land seedling.
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