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- primary phloem fiber 初生韧皮纤维
- Primary phloem PHLOEM derived from the procambium in the young plant. 初生韧皮部：指幼嫩植物中来源于原形成层的韧皮部。
- Protophloem The first-formed PRIMARY PHLOEM, differentiated from the procambium in the region just behind the meristem. 原生韧皮部：最早形成的初生韧皮部，由位于分生组织中的原形成层分化而来。
- The powder character are phloem fiber bundles,crystal fibers(fibers with sheath of crystal cells),druse and secretory cells. 茎横切面韧皮纤维束与筛管群、韧皮薄壁细胞相间排列 ,粉末中可见大量韧皮纤维束、晶纤维、分泌细胞、草酸钙方晶及簇晶。 理化鉴别特征 :可能含有黄酮类成分 ;
- Only a small quantity of phloem fibers were distributed in the secondary phloem, and the phloem ray was unconspicuous. 次生韧皮中分布有少量韧皮纤维，韧皮射线不明显。
- Studies on tri-dimension structure of ramie phloem fiber and its characteristics of growth and development 苎麻韧皮纤维三维结构与生长发育特性的研究
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- (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; (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；
- 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。
- phloem fiber 韧皮纤维
- 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。
- Primary education comes under the umbrella of local government. 小学教育受地方政府的保护。
- He only accepted the primary education off and on in his childhood. 他小时候只断断续续地接受过初等教育。
- The primary reason for advertising is to sell more goods. 做广告的根本目的是要多出售货物。
- Collins was nosed out by his opponent in the primary. 柯林斯在初选中就被他的对手击败了。
