quadrant

n 1 quarter of a circle or of its circumference 圆的或圆周的四分之一; 象限. =>illus at circle 见circle插图. 2 instrument with an arc of 90 marked off in degrees, for measuring angles 象限仪; 四分仪.

python, Q, Q, q, QB, QC, QE2, QED, qr, qt, qto, qty, qua, quack, quack-quack, quackery, quad, quadr(i)-, Quadragesima, quadrangle, quadrangular, quadraphonic (also quadrophonic), quadraphony (also quadrophony), quadratic equation, quadrennial, quadrilateral, quadrille, quadrillion, quadrophonic, quadrophony, quadruped, quadruple, quadruplet, quadruplicate, quaff, quagmire, quail, quaint, quaintly, quaintness, quake, Quaker,