Test conditions for numeriaclly controlled turning machines and turning centres - geometric tests for machines with a horizontal workholding spindle 数控立式车床和旋转中心的试验条件.带水平工件夹紧轴的机床的几何试验
Test conditions for numerically controlled turning machines and turning centres - accuracy and repeatability of positioning of linear and rotary axes 数控立式车床和旋转中心的试验条件.平直和旋转轴定位的精确性和反复性
Test conditions for numerically controlled turning machines and turning centres - part 7 : evaluation of contouring performances in the coordinate planes 数字控制旋转机床和旋转中心的试验条件.第7部分:坐标平面中等值线性能的评价
Test conditions for numerically controlled turning machines and turning centres - part 4 : accuracy and repeatability of positioning of linear and rotary axes 数字控制旋转机床和旋转中心的试验条件.第4部分:线性和旋转轴定位的精确性和可重复性
Conclusions : with the horizontal alveolar loss , the rotation center moved toward the apex and the capacity of periodontal support decreased significantly 结论：随着牙周支持组织高度的逐渐降低，牙的旋转中心向根尖移动，牙周支持组织对牙的支持能力明显减弱。
Dust devils are small tornadoes . they are common on earth , particularly in desert regions that have few obstructions , and on mars , a world dominated by deserts and great dust storms 在木星云顶景观中，流体的旋转速度取决于流体与旋转中心的距离，所产生湍流及层流形态，与木星土星天王星及海王星的大气层相似。
Dust devils are small tornadoes . they are common on earth , particularly in desert regions that have few obstructions , and on mars , a world dominated by deserts and great dust storms 在木星云顶景观中，流体的旋转速度取决于流体与旋转中心的距离，所产生湍流及层流形态，与木星、土星、天王星及海王星的大气层相似。
The paper mainly expounds the principle of automatic name placement of area element by center array method , the algorithm of polygon pretreatment , the method of getting array rotating center and the algorithm of name placement positioning line 摘要本文阐述了中心阵列法进行面状要素自动注记的原理、多边形预处理算法、求取阵列旋转中心的方法和求取注记定位线的算法。
In jovian cloud tops , the bands of fluid spin at varying rates , depending on their proximity to the centre , creating turbulent and laminar flow patterns . the patterns suggest cloud cover and atmospheric storms on jupiter , saturn , uranus , and neptune 在木星云顶景观中，流体的旋转速度取决于流体与旋转中心的距离，所产生湍流及层流形态，与木星土星天王星及海王星的大气层相似。
In jovian cloud tops , the bands of fluid spin at varying rates , depending on their proximity to the centre , creating turbulent and laminar flow patterns . the patterns suggest cloud cover and atmospheric storms on jupiter , saturn , uranus , and neptune 在木星云顶景观中，流体的旋转速度取决于流体与旋转中心的距离，所产生湍流及层流形态，与木星、土星、天王星及海王星的大气层相似。
