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| 51. | This article elaborates the connection between the volume of solids of rotation produced by plane figures encircling coordinate axes and areal coordinates, introduces its application to plane figure encircling an arbitrary beeline, and presents the general expression of volume of solids of rotation. |
| 阐述了平面图形绕坐标轴旋转产生的旋转体体积与形心坐标之间的联系,在此基础上把它推广到绕任意直线旋转的情况,并得出求旋转体体积的一般公式。 |
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| 52. | The paper also makes a discussion for the dimension and the magnifying and reducing of image,especially for grouping based on the relative positions among sample spots and variable spots through changing the scale of abscissa and ordinate,which can gain information flexibly. ? |
| 并对图示维数和图形放缩进行了探讨,特别是通过改变坐标轴比例尺,能清晰地根据样品点和变量点的相对位置进行分组,为信息获取提供了灵活性。 |
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| 53. | The first step of this project will be to write a fully working application which imports an object into your application( a simple cube for illustration purposes), and tumbles( rotates) the object in all three axis. |
| 这个项目的第一步将要写一个导入一个实体的完整的工作程序到你的程序（个简单的立方体的例子），然后绕着三个坐标轴翻倒（转）个物体。 |
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| 54. | To change the number of colored regions on a 3-D surface chart, select the value axis, choose Selected Axis from the Format menu, then change the Major Unit on the Scale tab. |
| 若要改变三维曲面图颜色区域的间距，选定数值轴后，再选择“格式”菜单中的“选定坐标轴”命令，在“刻度”选项卡内改变主要刻度的数值。 |
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| 55. | To change the number of colored regions in a surface chart, click the value axis, click Axis on the Format menu, and then change the Major Unit on the Scale tab. |
| 如果要改变曲面图中着色区的数目，请先选定数值轴，再选择“格式”菜单中的“坐标轴”命令，然后在“刻度”选项卡内改变“主要刻度单位”的数值。 |
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| 56. | Based on the point that the speeds of the hob and gear are equal along the tangent line at the cutting point, which is consistent with pure rolling between the pitch curves of the hob and gear, a group of equations is set up. |
| 以切削点处工件和刀具的切向速度相等(滚刀节曲线和非圆齿轮节曲线保持相互纯滚动)基本依据，推导出坐标轴联动控制的一组方程式。 |
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| 57. | You customized the axis of your chart by specifying a base unit for the time scale. However, the numbers you specified for the Major Unit and Minor Unit options can't be used with the base unit you specified. Please try again. |
| 通过指定时间刻度的基本单位，您已经自定义了图表坐标轴。但您指定的“主要刻度单位”和“次要刻度单位”的值与您指定的基本单位不匹配。请重新输入。 |
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| 58. | To transform our coordinates back to world space, we will need an" inverse matrix" of our view matrix- that is, a matrix that does the reverse of the view matrix, and thus given a coordinate that has been multiplied by the view matrix, will return the original coordinate. |
| 将坐标转换到空间世界，我们将需要视窗矩阵的一个逆矩阵—就是视窗矩阵的倒转过来的矩阵，并假定一个被视窗矩阵放大几倍的坐标轴将会返回原坐标。 |
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