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