power-phase angle diagram 功率相位差关系曲线
log-magnitude-angle diagram 对数幅度角度图
angle diagram method 角凰测量法 ; [测] 角图测量法
power-angle diagram 功率相位差关系曲线
four point small angle diagram 四点小角衍射图
rcs angle reflect diagram rcs角度反射图
right angle triangular diagram 直角三角形相图
But by carefully placing objects of different sizes so that the Angle always remains the same, it's possible to force perspective (see diagram b).
但是，如果通过小心的排列物体，以使这个角度保持不变，那么就有可能会改变这种远近关系。
The angle decreases as an object gets further away (see diagram a).
当物体离得远的时候，这个角度也会变小。
The author analyzes the relationship between side and Angle in a diagram to deduce a new general-purpose formula which can determine the length of arc radius and the size of an ellipse.
文中通过分析图形中的边角关系，推导出确定椭圆大、小圆弧半径长度的通用计算公式。
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