bract怎么读,bract的音标和真人发音
英音  [brækt]    
美音 [brækt]    

bract是什么意思,bract的意思是

n.苞叶,苞

bract 的用法和双语例句“点击”或“选中”例句中的单词,就可以看到词义解释

Leaf blade drying herbaceous ; bract margin entire to denticulate or serrate .
叶片干燥草质;苞片边缘全缘到具细齿或有锯齿。
Bract margin serrate ; basal leaf blade 2-4.5 cm , margin coarsely or obtusely toothed .
苞片边缘有锯齿;2-4.5厘米的基生叶,给镶边或钝切成齿形。
Bract and bracteole margin ciliate ; rays densely pubescent .
苞片和小苞片边缘具缘毛;伞辐密被短柔毛。
Inflorescences axillary or at leafless node , racemes or sometimes umbels ; 1 bract subtending each flower , usually scale-like .
有时在无叶的节点,总状花序或的花序腋生或伞形花序;1苞片在每朵花下面,通常鳞片状。
Inflorescence a terminal umbel or umbel-like raceme , 1 -- 10-flowered ; bract usually absent .
花序一象顶生伞形花序或伞形花序一样的总状花序,1-10花;苞片通常无。
Flowers bisexual , 1 per bract axil , pedicellate ; pedicel articulate or not .
花两性,每苞片1腋,有花梗;花梗有节与否。
In the early december , the first bract primordium was formed in the axil scale at the cone base , then bract initiation had occurred in acropetal direction .
12月初,最初的苞片原基在雌球果原基的鳞片的叶腋处产生,之后其由基部向顶部连续发生。
Spathe : a large , usually solitary bract subtending and often enclosing an inflorescence ; the term is used only in the monocotyledons .
花苞:一个大的,通常对位,经常单独苞片围一花序;该术语仅用于单子叶植物。
Male inflorescences erect catkins ; flowers in clusters of 1-3 ( - 5 ) with each cluster subtended by a bract ; perianth 6-parted ; stamens 10-12 ( - 20 ) ; rudimentary pistil pubescent .
雄花序为直立柔荑花序;雄花1-3(-5)朵簇生,被一个苞片包围;花被6分开;雄蕊10-12(-20);不育雌蕊被短柔毛。
Any of various deciduous shade trees of the genus tilia having heart-shaped leaves , drooping cymose clusters of yellowish , often fragrant flowers , and peduncles united into a large lingulate bract .
椴树一种落叶遮荫树木椴树属,长有心形叶,浅黄色聚伞状下垂花序,通常花朵芳香,花梗下端有巨大舌状苞片。