These secretory canaliculi are filled with acid.
这些分泌小管内充满了胃酸。
There is a great quantity of aerenchyma and secretory canals distributed in root, stem and leaf.
根、茎、叶中均有发达的通气组织和分泌道分布。
The secretory canals in the stem pith and above the leaf xylem were developed from ground meristem.
茎髓中和叶脉木质部上方的分泌道来源于基本分生组织。
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