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- The diameter of the tree-trunk is about 2 meters. 这树干的直径大约是2米。
- We must gauge the diameter of wire first. 我们必须先测量电线的直径。
- Must gauge the diameter of wire first. 我们必须先测量电线的直径。
- The diameter of the throwing ring is 2.5 metres. 投掷圈的直径是2.;5米
- Measure the diameter of this circle. 量一下这圆的直径。
- The diameter of this circle is three centimeters. 这个圆的直径是3厘米。
- The diameter of the column is one meter. 柱子的直径是一米。
- A unit of length equal to one thousandth(10-3) of an inch(0.0254 millimeter), used, for example, to specify the diameter of wire or the thickness of materials sold in sheets. 密耳长度单位，等于一英寸的千分之一(10－3)(0.;0254毫米);如用来标明电线的直径或按页出售的材料的厚度。
- the diameter of detritus 碎石粒径
- The diameter of mass often exceeded 5 cm. 病变直径大于5cm 者多;
- The diameter of the objective of a telescope. 孔径望远镜物镜的直径
- The diameter of the tree-trunk isf about 2 meters. 这树干的直径大约是2米。
- How much is the diameter of the sun longer than that of the earth? 太阳的直径比地球的直径长多少?
- The diameter of the inside of a round cylinder, such as a tube. 口径圆柱体内侧圆的直径，如管道
- The diameter of the column has now decreased to 2, 000 feet. 这时水柱的直径已减少到2000英尺。
- The diameter of Mars is slightly over half that of the earth. 火星的直径比地球的半径稍大些。
- How much is the diameter of the sun longer than that of the earth ? 太阳的直径比地球的直径长多少?
- What is the diameter of the throwing ring in the discus event? 铁饼投掷圈的直径多大?
- The ratio of the circumference to the diameter of a circle. 圆周长度与圆的直径长度的比。
- The diameter of such an opening, often expressed as an f-number. 孔径这种开口的直径，常以f数表示
