Thereinto , the correction of attenuation is a big problem in millimeter - wave cloud radar detection 但是，毫米波云雷达探测，必须考虑的问题之一是大气衰减订正。
2.
Mountain wave cloud also known as lenticular cloud , i . e . lens shaped was observed on the hilltop of lantau on 12 august 2003 . the picture was taken at around 2 : 20 p . m . that afternoon at the hong kong international airport looking south - southeast towards lantau with a setting of 1 160s , f8 . 0 and iso - 100 speed . at the time winds were light to moderate southerly , with showers just passing over lantau an hour earlier 相片显示大屿山的山顶正盖著一层波状云也称为荚状云，因其形状如豆荚照片是在二零零三年八月十二日下午二时二十分左右拍摄，地点在香港国际机场朝著东南偏东的方向，用度菲林快门为1 160秒和光圈f8 . 0 。
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