/-{-{chángzhóur}-}-/, /-{-{chángzhóu}-}-/, /t͡sʰœːŋ²¹ t͡sʊk̚²/, /charngjour/, /charngjourl/, /chángjhóu/, /chángjhóur/, /coeng4 zuk6/, /cêng4 zug6/, /tsoeng4 dzuk9/、/ㄔㄤˊ ㄓㄡˊ/、/ㄔㄤˊ ㄓㄡˊㄦ/
(幾何學) 橢圓形上相距最遠的兩個點的連線，穿過中心和焦點