当量直径

碎片的当量直径符合累积高斯分布，分布曲线可用Sigmoid函数表示；

Profiles of the equivalent diameter of the fragmented particles follow the accumulated Gaussian distribution , and can be fitted with Sigmoid formula .

锻件单个缺陷的当量直径从2.5mm减小到了1.6mm，并不存在密集性缺。

The equivalent diameter of single defect decreased from 2.5 mm to 1.6 mm , and no intensity defect observed .

气泡的上升速度是气泡表现气速和当量直径的函数，但其K值并不是一个常数；

The bubble rising velocity is a function of superficial gas velocity and the bubble diameter .

结果表明三叶形SiC纤维的异形度、当量直径有一定的分布；

It was found that degree of profile and effective filament diameters of trilobal cross SiC fibers lie a distribution .

所谓大气细颗粒物（PM（2.5））是指空气动力学当量直径≤2.5μm的悬浮颗粒物。

The meaning of airborne fine particles ( PM_ ( 2.5 )) is particles with aerodynamic diameter less than 2.5 μ m.

试验中使用的膜为不锈钢金属膜，将该膜作为颗粒床层对其几何特性进行了研究，分别求出金属膜的比表面α、空隙率ε、当量直径de等几何参数。

Membrane used in tests is stainless steel metal membrane , which is regarded as granular-bed to study their geometric parameter , such as the specific surface of the metal membrane ultrafiltration ;

高钒高速钢当碳含量达到4.2%时，K为0.86和当量直径D为0.78μm，碳化物呈团球状均匀分布。

Besides , when carbon is up to 4.2 % , the morphology of vanadium carbide is nodular and even distributed ( K and D is 0.86, 0.78 μ m differently ) .

对湖南省部分城市不同建筑类型室内的空气动力学当量直径小于等于10μm的可吸入悬浮颗粒物（PM10）室内外浓度进行了测试。

Indoor and outdoor concentrations of particulate less than 10 μ m ( PM10 ) were investigated in some cities in Hunan .

随着微加工技术和MEMS技术的快速发展，当量直径在微米/毫米量级的微细、微小通道在现代工业中被广泛使用，微细/微小管内的对流换热成为当前重要的研究课题之一。

With the rapid development of micro-fabrication technique and MEMS technology , so micro / mini tubes with an equivalent hydraulic diameter of micron / millimeter are widely used in the current industry and study of convection in such tubes are becoming more and more important .

本算法适用的颗粒当量直径为1e－5～1e＋5，折射率虚部0～1e＋5。

The particle size parameter calculating range by the new algorithm is extended to 1 e-5 ~ 1 e + 5 , the imaginary part of the refractive index to 0 ~ 1 e + 5 .

当湿式振动矩形金属纤维栅为6片，风速为3.3m/s时，纤维栅在当量直径为0.074mm和0.109mm时的最大过滤阻力分别为488Pa和500Pa。

As of the two kind of wet vibration flat metal fiber grid equals 6 and the air velocity to 3.3 m / s with the maximum resistance equal to 488 Pa and 500 Pa , respectively .

双射流喷嘴最佳喷距约为当量直径的5～8倍；

And the optimal standoff distance is about 5 ~ 8d ;

随着微槽道当量直径的减小，流体的换热系数增加。鹤类种群数量在逐渐恢复。

Decreasing the diameter . The population are increasing gradually .

水力直径作为当量直径的适用范围、缺欠与修正

The applicable range , defect and correction of equivalent diameter used hydraulic diameter

环柱形催化剂当量直径及传热参数的测定

Measurement of Equivalent Diameter and Effective Thermal Conductivity of a Hollow Cylindrical Catalyst

流量随流道当量直径的平方增加；

The volumetric flowrate in - creased with the square of hydraulic diameter .

采用加热当量直径为定性尺寸要比采用水力当量直径更为合理。

Secondly , using heat diameter is more reasonable than using hydraulic diameter .

基于动量守恒原理，提出了考虑径向流动和密度差别的同轴交叉射流的当量直径和当量速度。

A new equivalent diameter and equivalent velocity based on momentum conservation were proposed .

采用当量直径法对异形喷丝板的尺寸进行设计、计算。

The dimension of shaped spinneret was designed and calculated by equivalent diameter analysis .

管道当量直径的计算

Calculation of the Equivalent Diameter in the Pipeline

矿井通风中的当量直径计算问题

Calculation to the Equivalent Diameter in Mine Ventilation

斜微肋扁传热管的换热性能与当量直径和肋高有关。

The hydraulic diameter and fin height can influence heat transfer of micro-fin flat tubes .

阻力增大的速率随着孔隙率和当量直径的减小而增大。

And the resistance increase rate also increases with the hydraulic diameter or porosity decreasing .

冷却塔中雨区的水滴当量直径

The Equivalent Diameter of Water Droplets in the Rain zone of Natural Draught Cooling Towers

扁圆形管道的当量直径

Circular equivalent of the flat-circular pipe

史密斯（1962）提出了三种不同方法以计算不均匀沙的当量直径。

Smith ( 1962 ) considered three alternate methods to determine an equivalent diameter of graded sediment .

旋流分离器入口当量直径越大，压力降越低，效果越差。

The greater the equivalent inlet diameter , the smaller the pressure drop and the lower the separation efficiency .

作者通过引入球形度，找到了当量直径的计算方法；

By quoting " sphere coefficient ", author found a method to calculate the equivalent diameter of fiber particle .

沸石分子筛材料中次级孔的研究&Ⅰ.晶粒内次级孔与晶粒当量直径

Study on Secondary Pore in Zeolite Molecular Sieve Materials ⅰ . Secondary Pore in Crystalline Particle and Equivalent Diameter of Crystalline Particle

在相同的一次喷嘴当量直径条件下，凝相颗粒的碰撞动量与喷嘴结构之间的关系不大。

The collision momentum of condensed particles has little relation with the injection nozzle configuration under the same primary nozzle equivalent diameter .