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- Primary root fusiform, stout. 主根纺锤形，坚固。
- Tap root fusiform, 10-20 cm long, 1-4 cm in diameter. 主根纺锤形，长10－20厘米，直径1.;4厘米。
- The primary root is tetrarch,and endodermis with casparian strip is obvious. 初生根为四原型 ,内皮层明显 ,可见到凯氏带。
- Acropetal differentiation of the cambium layer continues as the primary root elongates. 形成层的向顶分化像初生根伸长一样在继续进行。
- The correlation between IAA content level and ABA/GAs in primary root and growth trend of rootstocks is not clear either. IAA含量水平和ABA/GAs比值同砧木的生长势关系暂时还不明确。
- Roots fusiform, solitary or caespitose, rarely each node of rhizome globose or clavate, forming a moniliform chain. 纺锤形的根，单生或丛生的，很少每节的根状茎球状或棍棒状，形成一念珠状链子的。(48
- Roots fusiform thickened; sheathlike involucral bracts dense, at least apical ones connate; capsule with several seeds per valve. 纺锤形根加厚；鞘状总苞片浓，至少顶端的合生；每裂片的蒴果具数个种子。(8
- The microstructure of primary root and different secondary roots were studied by hand sectioning and routine mineral wax moviemaking. 结果显示：与不耐旱品种玉米的根系相比，耐早玉米的初生胚根的皮层细胞层数较少，木质部导管数量较多、导管直径较小；
- Protosteles are found in the primary roots of higher plants, and in some species of Lyopodium and Psilotum. 原生中柱存在于高等植物的初生根中，在类似于石松属植物中也可以见到。
- Keywords Sylow-tower;extension;symmetrically;primary root; 西洛塔;扩张;同构;原根;
- Primary root turbinate, often fleshly and inflated, to 6 cm; 陀螺状的主根，肉体和膨大的通常，在6厘米；
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
- Sure. We are friends since primary school. 当然，我们从小学就是朋友了。
- I started primary school when I was 5 years old. 我五岁时开始读小学。
- A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
- Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
- Love and hatred are primary emotions. 爱和恨是基本的情感。
- The Democratic primary was held this month. 民主党候选人初选於本月举行。
- tissues in 10 days primary roots 日龄仅10天的初生根组织
