root n. 鲁特〔姓氏〕。 n. 1.(草木、毛发等的)根;根菜,食用菜根;根茎,地下茎;块根;有根植物,草木,草;〔pl.〕根菜类;(山)麓。 2.根本,根源,原因;本质;基础,根柢;【语言学】词根;根词;【数学】根数,根。 3.祖先;【圣经】子孙。 4.【音乐】和弦基音。 the root of a tooth 牙根。 the root of all evil 祸根。 the root of a gem 玉根〔毛玉的非玉部分〕。 a cubic [second, square] root 立方[平方]根。 at (the) root 根本上。 be at the root of 是…的根本[基础]。 by the root(s) 连根,从根部,从根源 (pull up by the roots 连根拔除,根除)。 get at [go to] the root of 追究…的根底,追查…的真相。 lay the axe to the root of 根本改革;治本。 root and branch 完全,都;彻底地,急进地。 strike at the root of 打击…的根部,彻底摧毁。 strike [take] root 生根;扎根;固定,固着。 to the root(s) 充分地;竭力地;彻底地。 vi.,vt. (使)生根;(使)固定;(使)固着;〔比喻〕深深种下,使根深蒂固。 Terror rooted him to the spot. 吓得他呆立不动。 root up [out] 连根拔除(杂草等);肃清(反叛等)。 adj. 根的;根本的。 a root idea 根本思想。 vt.,vi. (猪等)用鼻子掘(地);搜寻 (for)。 R-, hog, or die. 〔美国〕拚命干啊,不然就得饿死。 vi. 〔美俚〕应援,声援;支持,赞助;欢呼,喝彩。
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例句与用法
At maturity the root system is extensively nodulated . 在成熟时,根系普遍具有根瘤。
Root systems have had to be excavated without the aid of water . 根系必须在不用水的情况下掘取。
The root system of the apple tree grows in proportion to the top . 苹果根系的生长与树冠生长成正比。
The root system of the soybean consists of a taproot formed by the radicle . 大豆的根系包括由胚根形成的主根。
Thus, the fungal isolate appeared able to influence both the development and form of its host's root system . 因此,真菌分离物似乎能影响其寄主根条的发育和形成。
Differences in the requirements of plant species for potassium fertilization are often attributable to the kind and activity of the root system . 各种植物对钾肥的不同需求,常归因于根系的特性和活力。
Research progress on effects of light on crop root system 光对作物根系影响研究进展
Visualized modeling system of three - dimensional roots system growth 植物根系生长的三维可视化模拟
Study on root system development ability of alfalfa cultivars 不同紫花苜蓿品种根系发育能力的研究
Investigation of cotton root system growth status under drip irrigation 滴灌棉花根系生长状况调查启示
In mathematics, a root system is a configuration of vectors in a Euclidean space satisfying certain geometrical properties. The concept is fundamental in the theory of Lie groups and Lie algebras.