| 释义 |
quadrantquadrant[ˈkwɔdrənt]n.1.■【数】象限; 圆周的四分之一; 两条直线垂直相交划出的一区域或一部分2.■【天, 航海】象限仪; 四分仪3.■【生】四分体4.■长度单位(=10, 000 kilometres)5.■扇形体; 鱼鳞板; 扇形舵;【机】扇形齿轮6.■移向器7.■无线电导航信号区8.■双反射测角镜the upper right quadrant of a page书页的右上方
继承用法quadrantaladj.
特殊用法azimuth quadrant1.■地平象限仪brake lever quadrant1.■制动杆扇形板bubble quadrant1.■带汽泡水准的扇形测角仪counter quadrants1.■对部counter-lateral quadrants1.■对侧部deck sash quadrant1.■顶棚窗扇形板elevator quadrant1.■升降机扇形齿轮gear quadrant1.■扇形齿轮(板), 转向齿轮, 月牙轮gunner's quadrant1.■火炮象限仪lower quadrant1.■下象限rudder quadrant1.■方向舵扇形体stream quadrant1.■测流象限throttle lever quadrant1.■节流杆扇形板upper quadrant1.■上象限 |