vertical circle

基本解释

The track of the revolution of the earth is called ecliptic, and the imaginary circle vertical to the earth's axis is called equator.
地球围绕太阳运行的轨道叫“黄道”，在地球中央有一条假想的与地轴垂直的大圆圈，这就是赤道。
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Anaerobic phosphate release rate and its affecting parameters were studied in an anaerobic-integrated oxidation ditch with vertical circle regime system(AN-IODVC).
本研究考察了厌氧-立体循环一体化氧化沟工艺（AN-IODVC）中厌氧释磷效果及诸影响因素。
According to the features of raw material, the customer can choose the drying method of either vertical or horizontal circle, in order to enhance the efficiency and quality of product.
用户可根据物料特点选择纵向循环或横向循环的干燥方式，来提高效率及产品质量。

The weekly OBV moved above its WMA on July 30, 2010 (see vertical line), and then as IWM dropped back to test the lows, the OBV was stronger (circle e) as it stayed above its WMA. At this time, the monthly OBV was positive from May 2009.
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a great circle on the celestial sphere passing through the zenith and perpendicular to the horizon