髓鞘生成區 的英文怎麼說
中文拼音 [suǐqiàoshēngchéngqū]
髓鞘生成區
英文
flechsig's field- 髓 : 名詞1. [生理學] (骨髓; 像骨髓的東西) marrow 2. [植物] (莖的中心部分) pith
- 鞘 : 鞘名詞(裝刀劍的套子) sheath; scabbard
- 生 : Ⅰ動詞1 (生育; 生殖) give birth to; bear 2 (出生) be born 3 (生長) grow 4 (生存; 活) live;...
- 成 : Ⅰ動詞1 (完成; 成功) accomplish; succeed 2 (成為; 變為) become; turn into 3 (成全) help comp...
- 區 : 區名詞(姓氏) a surname
- 髓鞘 : marrow sheath
- 生成 : create; generate; produce生成演算法 generating algorithm; 生成文法 generating grammar; 生成物 pro...
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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
結果表明:氣生不定根具有以下結構特徵和發育特點: ( 1 )根為二原型,側根正對著木質部發生; ( 2 )幼根內皮層細胞具凱氏帶加厚,維管柱內緊挨中柱鞘內側具有2 ~ 4層大型薄壁細胞; ( 2 )根中無髓和樹脂道; ( 4 )次生結構發生於根毛區,維管形成層由初生木質部和初生韌皮部之間的薄壁細胞轉化形成; ( 5 )中柱鞘和栓內層細胞富含單寧類物質; ( 6 )次生韌皮部有石細胞,次生木質部射線發達。
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