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.
指出螺栓联接的扭紧力矩值不仅与螺栓的公称直径及性能等级有关，还与能否保证联接可靠工作有关。
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.
流道孔径与阀门公称通经，基本相同的为全通径式；流通孔径比阀门公称通经小的称为缩径式。
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.
对比试块应从与待检材料有相同的公称外径、材质和热处理状态的棒或管上制取。
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