root hair zone中文是什么意思

發(fā)音:

中文翻譯
造句

根毛層
根毛區(qū)

root vi. 〔美俚〕應(yīng)援，聲援；支持，贊助；歡呼，喝彩。
hair n. 1.〔集合詞〕毛發(fā)，頭發(fā)，汗毛。 2.毛狀物；毛狀 ...
zone n. 1.【地理】(地)帶。 2.區(qū)域，范圍，界。 3. ...
hair root 毛根; 須根
root hair 根毛
root zone 根帶，根區(qū); 山根帶; 神經(jīng)根帶; 褶皺根帶
average root hair length 根毛平均長(zhǎng)
bending or curling of the root hair 根毛卷曲
functional root hair 功能根毛
hair root ending 毛根末梢
hair root sheath 毛根鞘
normal hair root 毛發(fā)根
old root hair 老的根毛
root hair crack 焊縫根部裂紋
root hair deformation assay 根毛變形試驗(yàn)
root hair formation 根毛形成
root hair region 根毛區(qū)
root portion of hair 毛根部
root sheath of hair 毛根鞘
root-hair region 根毛區(qū)
single root hair 單個(gè)根毛
total root hair number 總根毛數(shù)
deep-root zone 深陸根帶
deepseated infracrustal root zone 深部?jī)?nèi)殼根部帶
median root zone 中根帶, 卵圓束

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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(jié)果表明：氣生不定根具有以下結(jié)構(gòu)特征和發(fā)育特點(diǎn)： ( 1 )根為二原型，側(cè)根正對(duì)著木質(zhì)部發(fā)生； ( 2 )幼根內(nèi)皮層細(xì)胞具凱氏帶加厚，維管柱內(nèi)緊挨中柱鞘內(nèi)側(cè)具有2 ~ 4層大型薄壁細(xì)胞； ( 2 )根中無髓和樹脂道； ( 4 )次生結(jié)構(gòu)發(fā)生于根毛區(qū)，維管形成層由初生木質(zhì)部和初生韌皮部之間的薄壁細(xì)胞轉(zhuǎn)化形成； ( 5 )中柱鞘和栓內(nèi)層細(xì)胞富含單寧類物質(zhì)； ( 6 )次生韌皮部有石細(xì)胞，次生木質(zhì)部射線發(fā)達(dá)。

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