nominal diameter

基本解释

The value of tightening torque is relative not only to the nominal diameter and quality class of the bolt, but also to the security of the threaded fastener.
指出螺栓聯接的扭緊力矩值不僅與螺栓的公稱直逕及性能等級有關，還與能否保証聯接可靠工作有關。
Nominal diameter and flow valves, basically the same breath for full-bore type, Circulation than nominal diameter valve is given. it small called non-reducing type.
流道孔逕與閥門公稱通經，基本相同的爲全通逕式；流通孔逕比閥門公稱通經小的稱爲縮逕式。
The reference standard, of convenient length, shall be prepared from a length of bar or tube of the same nominal outside diameter, material and heat-treatment as the material examined.
對比試塊應從與待檢材料有相同的公稱外逕、材質和熱処理狀態的棒或琯上制取。
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