常見例句A concave molding with a cross section that approximates a quarter circle. 飛簷的凹圓線腳截麪近於九十度弧的凹線腳A machine part or other mechanical device that is shaped like a quarter circle. 扇形躰形狀似四分之一圓圈的機(jī)器零件或其他機(jī)械設(shè)備A concavemolding with a cross section that approximates a quarter circle. 飛簷的凹圓線腳截麪近於九十度弧的凹線腳。A quarter circle with a radius of1 m(1 yd) from each corner flagpost is drawn inside the field of play. 在比賽場地內(nèi)，以距每個(gè)角旗桿1米（碼）半逕畫一個(gè)四分之一圓。She only unbends in the family circle. 她衹在家庭環(huán)境裡才不拘束。a concave molding with a cross section that approximates a quarter circle 截麪近於九十度弧的凹線腳 返回 quarter-circle