nominal diameter
英 [ˈnɒmɪnl daɪˈæmɪtə(r)]
美 [ˈnɑːmɪnl daɪˈæmɪtər]
n. 标称（名义）直径，中值粒径，铭牌直径，等容粒径
双语例句
- 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。 - The terminals number, outlet directions, outlet` s number and nominal diameter can be changed at will.
端子数出线口方向及数量，公称直径可任意变化。 - Nominal diameter is the diameter of a sphere of the same volume as the given particle.
等容粒径是某一球体直径，它与某已知的颗粒体积相等。 - Compared to the new wheel tread, the worn tread is easy to form two-point contact nearby the depression area of the nominal diameter position of wheel tread.
与新用车轮踏面相比，测试得到的磨耗后车轮踏面在其名义直径位置凹陷区域附近容易形成踏面两点接触。 - The nominal diameter has little significance in sediment transportation.
等容粒径在沉沙输移中意义不大。 - Bypass Valve with nominal diameter of the same nominal diameter pipeline, pressure level pressure level is also consistent with the process.
旁路阀公称直径与管道公称直径相同，耐压等级也与工艺耐压等级一致。 - Tube diameter shall be within 10% of nominal diameter within bend radius.
管直径须在直径理论值和折弯半径的10%以内。 - The utility model has the advantages of low price and non-limitation of nominal diameter.
具有价格低及公称直径不受到限制的特点。 - Nominal diameter of pressure vessel
GB/T9019-1988压力容器公称直径 - Nominal volume and nominal diameter for glass-lined vessel
GB/T7996-1987搪玻璃容器公称容积与公称直径 - Two upflow filter beds were cascaded and were packed with polystyrene foaming pellet with nominal diameter of 3-4 mm, the bed height was 2 m.
将两个上流式滤柱串联，其中填充以3～4mm的聚苯乙烯发泡粒子，床层高度为2m。 - 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。 - The analysis shows that if pipe system with nominal diameter of 20 cm is used, the transfer capacity may come up to a distance of 2-3 km.
分析表明，采用20cm的管网系统，其水平输送距离可达2～3km。 - For middle-pressure gas pipeline, the PE pipe is used if the nominal diameter does not exceed 200 mm;
对中压燃气管道，若公称直径不大于200mm，采用PE管； - Investigation of the Relations among Frit Diameter, Average Intercept and Nominal Diameter of Crystall Grain
晶粒的弗里特直径、平均截距、公称直径之间关系的研究 - The Calculation of the Head of Water Meter and the Choice of Nominal Diameter of Water Meter
水表水头损失的计算和水表公称直径的选择 - This paper describes the manufacturing tecnology of 180 ° stamping and welding el-how with crooked radius equal or smaller than nominal diameter. It also introduces the developed diagram of elbow and so on.
本文叙述了弯曲半径等于或小于公称直径的180°冲压焊接弯头的制造技术以及弯头的展开图作法、弯头胎模具、弯头冲压和弯头成形组焊技术等。 - Selecting the type of expansion joint according to nominal diameter, pressure class and compensation amount.
根据通径、压力等级及补偿量选择波膨胀节的型号。 - Manufacturing Tecnology of 180? Stamping and Welding Elbow with Crooked Radius Equal or Smaller than Nominal Diameter
弯曲半径等于或小于公称直径的180°冲压焊接弯头的制造技术 - There is a linear relationship between the average dilution and dimensionless downstream distance; DBV jet has better effect of dilution as compared with the round jet of the same nominal diameter in coflows under the same volume of discharge.
平均稀释度和无量纲的沿程距离之间存在线性关系，相比于具有相同名义直径的同向流动环境中的圆射流，在相同排放流量条件下，DBV射流具有更好的稀释效果。 - The mathematical model of optimum design for the pressure vessel is derived. This model takes the minimum mass of shell as objective function, and takes internal diameter& nominal diameter and nominal thickness as the design variables.
建立了以壳体质量最轻为设计目标、以内径（公称直径）和名义壁厚为设计变量的优化设计的数学模型。 - Steel mills using waste gas in combined cycle power project, steel mills use the nominal diameter ≥ 200mm of large control valve to control pressure of the mixed gas.
在钢厂的循环发电工程中，各钢厂利用公称直径d≥200mm的大型调节阀对混合煤气进行压力控制。