You can think of it as a chemical “pump” which generates incredibly high pressure— up to 9 times that of a car tire— in the sieve tubes.
您可以将它想象成一个化学“ 泵” ， 它在筛管中产生难以置信的高压—— 高达汽车轮胎的 9 倍。
sieve tube
英汉-汉英词典
筛管
词组 | 习惯用语
您要查找的是不是：
ray seive tube 射线筛管
ray sieve tube 射线筛管
sieve tube member 筛管节
sieve tube plasmolemma 筛管质膜
vesselform sieve tube 导管状筛管
sieve tube cell 筛管细胞
sieve tube element 筛管分子
sieve tube segment 筛管节
sieve tube members 筛管细胞
sieve tube 筛管
原声例句
TED-Ed（视频版）
英语百科
Sieve tube element
（重定向自Sieve Tube）
In plant anatomy, sieve tube elements, also called sieve tube members, are a specialised type of elongated cell in the phloem tissue of flowering plants. The ends of these cells are connected with other sieve tube members, and together they constitute the sieve tube. The main function of the sieve tube is transport of carbohydrates, primarily sucrose, in the plant (e.g., from the leaves to the fruits and roots). Unlike the water-conducting xylem vessel elements that are dead when mature, sieve elements are living cells. They are unique in lacking a nucleus at maturity.
近义、反义、联想词
近义词
n.vascular tissue
英英词典
sieve tube n.
- tube formed by cells joined end-to-end through which nutrients flow in flowering plants and brown algae