树脂道 meaning in English
gum duct
resin canal
resin duct
resin passage
Examples
- They are usually secreted by special cells into long resin ducts or canals
树脂通常隐藏在特定的细胞中，这些细胞形成长的树脂道或树脂管。 - We have observed the following characteristics of anatomical structure and development : ( 1 ) the primary roots belong to archetype and the lateral roots occur in the position toward the xylem of the vascular cylinder ; ( 2 ) the root endodermis consists of thicken casparian strips , and there are from two lo four layers parenchyma cells near the pericycle ; ( 3 ) the pith and resins canals are absent in the toots ; ( 4 ) secondary structure occurs in the root hair zone , and vascular cambium is formed from the parenchyma cells between the primary xylem and primary phloem ; ( 5 ) tanning materials are abundant in pericycle cells and phelloderm cells ; ( 6 ) sclereids are found in secondary phloem , and rays are rather rich in secondary xylem
结果表明：气生不定根具有以下结构特征和发育特点： ( 1 )根为二原型，侧根正对着木质部发生； ( 2 )幼根内皮层细胞具凯氏带加厚，维管柱内紧挨中柱鞘内侧具有2 ~ 4层大型薄壁细胞； ( 2 )根中无髓和树脂道； ( 4 )次生结构发生于根毛区，维管形成层由初生木质部和初生韧皮部之间的薄壁细胞转化形成； ( 5 )中柱鞘和栓内层细胞富含单宁类物质； ( 6 )次生韧皮部有石细胞，次生木质部射线发达。 - Abstract : the resource distribution of aralia elata in northeast china were investigated . by means of the optical microscope , the features of histology and powder of cortex of this plant were first examined . in the cortex , threre are a large number of secretory ducts and a small quantity of druses of calcium oxalate
文摘:对分布在我国东北地区的药用植物辽东?木的资源进行了调查，以光学显微镜对其根皮的组织和粉末进行了观察，其根的皮层较层，并含有大量的树脂道，粉末具有大量的淀粉粒及少量草酸钙结晶