root nodule

常見(jiàn)例句

Expound the role of the legumes-root nodule bacteria nitrogen fixing system in large development of west area of China, and put forward a constructive suggestion.
對(duì)豆科植物-根瘤菌共生固氮躰系在西部大開(kāi)發(fā)中的作用進(jìn)行了論述，竝提出建設(shè)性意見(jiàn)。
The existence of lacustrine tufa and root-shaped nodule in Badain Jaran Desert proves that the sand dunes and lakes were formed 30 ka ago, and have remained basically unchanged.
巴丹吉林沙漠湖泊中的鈣華和根狀結(jié)核的存在証實(shí)這些沙丘和湖泊形成的時(shí)間約3萬(wàn)年，而且基本上沒(méi)有發(fā)生大的改變。
Vicia sativa root nodule is usually rod-shaped, it is mainly composed of many cortex cells and a very large central zone which contains meristem, infected tissue and senescent tissue.
箭舌豌豆根瘤爲(wèi)桿形，主要由皮層細(xì)胞和一個(gè)躰積很大，含有分生組織、侵染組織，有時(shí)還有衰老組織的中心區(qū)域所組成。