同心孔板 concetric orifice plate
铰同心孔 align reaming
镗同心孔 align boring
同心锐孔板 concentric orifice
法兰取压同心锐孔板 concentric orifice with flange taps ; taps
同心锐孔隔板 [仪] concentric orifice plate
同心管孔排列 concentric pore arrangement
潜孔锤同心跟管钻具 DTH hammer drilling with concentric simultaneous casing
潜孔锤同心跟管钻进 DTH hammer drilling with simultaneous casing tool
设计一套特殊测厚规测量两个环形凸台的距离，这两个环形凸台位于两个同心孔内。
The article designs a special dial thickness gauges that measures the distance between ring-steps in two concentric bores.
电机带动无孔转鼓及同心安装的输料螺旋，以一定的差速同向高速旋转。
Motor drives the solid-bowl without holes and the feeding scroll assembled concentric to rotate together to a higher speed at a certain differential speed.
管路法兰与泵口要同心，偏差不能超过法兰螺栓孔尺寸公差。
As a general rule, piping flanges should be concentric to pump nozzles to within the flange bolt hole clearance tolerance.
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