周长

• Add the length and girth measurements together to get your total package size
  将长度与周长相加可得出包裹的总尺寸。
• Teacher : express the way of calculating the perimeter of a circle by letters
  师：圆的周长的计算方法，用字母公式表示。
• Circumference of the earth
  地球的周长？
• Plain bearings . methods of dimensional control . peripheral length checking of thin - walled half bearings
  滑动轴承薄壁轴瓦周长的检验方法
• 1960s scientific study of the club head led to developments such as perimeter weighting
  年代，科研开发出“周长权重rdquo ;的杆头球杆。
• It is larger than the usa and reaches nearly a quarter of the way round the earth
  它比美国还要大，其国土的长度几乎达到地球周长的四分之一。
• It is larger than the usa and reaches nearly a quarter of the way round the earth
  它比美国还要大，它的国土的长度几乎达到地球周长的四分之一。
• Represents the ratio of the circumference of a circle to its diameter , specified by the constant ,
  表示圆的周长与其直径的比值，它通过常数指定。
• It is larger than the usa and reaches nearly a quarter of the way round the earth
  它比美国还要大，它的国土的长度几乎达到地球（同纬度的）周长的四分之一。
• If we want area and circumstance , at first we must test the edge of fiber scale
  纤维图像就是灰度图。要想得到鳞片的面积和周长，首先要对鳞片进行边缘检测。