circular ring

基本解释

The method of counting for circular ring objects in frequency domain is proposed.
研究了用频域法实现圆环形目标物计数的方法。
But the arithmetic product operation is needed to determine a pixel belonging to which circular ring, which consumes much time.
但由于确定各像素点属于哪一个圆环需要进行复杂的乘积运算，耗费了大量时间。
The flexural vibration of a circular ring that is of axis symmetry is analyzed and calculated, the solid frequency expression of the flexural vibration is obtained.
对一类轴对称圆环的面内弯曲振动进行了分析计算，给出了圆环面内弯曲振动固有频率表达式。

There is no way that you could irradiate a crystal of nickel with a single beam of x-rays and get that circular ring pattern if the electron beam were behaving as a particle beam only.
没有什么其他的途径,可以让镍晶体发射,单束X光来,继而得到环状图案,如果电子束,是以粒子束形式出现的。
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