radius是什么意思

radius

英 ['re?d??s] 美 ['red??s]

radius 半徑

rad-,半徑，根，-us,陽性格。

radius (n.): 1590s, "cross-shaft," from Latin radius "staff, stake, rod; spoke of a wheel; ray of light, beam of light; radius of a circle," of unknown origin. Perhaps related to radix "root," but Tucker suggests connection to Sanskrit vardhate "rises, makes grow," via root *neredh- "rise, out, extend forth;" or else Greek ardis "sharp point."

The geometric sense first recorded 1610s. Plural is radii. Meaning "circular area of defined distance around some place" is attested from 1953. Meaning "shorter bone of the forearm" is from 1610s in English (the Latin word had been used thus by the Romans).

1. Nigel has searched for work in a ten-mile radius around his home.: 奈杰爾一直在他家周圍10英里的范圍內(nèi)找工作。

2. They deliver to within a 5-mile radius of the store.: 他們在距離商場5英里的范圍內(nèi)送貨上門。

3. He has visited every shop within a radius of two miles.: 周圍兩英里以內(nèi)的店鋪他都去過.

5. A special load balancing server designed for solving this problem can manage multi RADIUS servers.: 設(shè)計了一個專門的負(fù)載平衡服務(wù)器,調(diào)度多個RADIUS服務(wù)器,使得各個服務(wù)器的負(fù)載達(dá)到均衡.