The centre of this wooden disc was hollowed out to a diameter equal to the exterior diameter of the columbiad . 这木盘中间留着一个直径相当于哥伦比亚炮外径的圆洞。
By translations and changes of scale the spectral subspaces associated with all discs can be characterized similarly . 通过平移与尺度改变，伴随着一切圆域的谱子空间都可以类似地给予刻划。
The plate was loaded in its own plane by a pin passing through the hole in an annular disc fitted in the hole in the plate . 平板的孔里面镶嵌着一个套环，在此圆盘的孔中穿过一个销钉而使平板在其自身平面内受载。
General dvd - r disc with 4 . 7gb storage capacity 带有该图标的硬盘显示为dvd - r硬盘
There is even ? a bonus disc ? for creating asparagus 还有一个附赠的做芦笋的碟子。
The edge of the disc had been machined flat / smooth 圆盘的边缘已用机器磨平[光]
Bonded abrasive products . disc wheel with inserted nuts 普通磨具.螺栓紧固平形砂轮
Rebuilding for 140 horizontal toteing disc ctp 140卧式带导盘锥形辊穿孔机的改造
Closed insert nuts with disc for plastics mouldings 塑料模塑件用盘闭口螺母镶件
Vibration analysis of mistuned bladed disc of steam turbine 轮盘系统耦合振动分析
