基本解释：等径孔道
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In addition, presents the principle,method and steps for the strength calculation of the header with nonequal diameter opening row by the calculating program for the header with equal diameter opening row.对引进的CE公司集箱强度计算程序进行了改进,论述了用现行的等径孔桥集箱强度计算程序计算不等径孔桥的原理、方法和步骤。
Based on the criterion of avoiding the loss of the effective spatial-frequency information,the restrictive conditions of the spatial arrangement are calculated,and then the effective frequency coverage range and the equivalent aperture are obtained.根据避免有效频率信息丢失的原则,分别计算了三种结构各自对应的空间排布限制条件,在此基础上得到了三种结构的有效频率覆盖范围和等效孔径。
The relationship among the valid porosity,permeability coefficient,plane porosity,equivalent aperture and compressive strength and the situation of pore distribution is also discussed.分别研究了单掺粉煤灰、矿渣和硅灰3种矿物掺合料的多孔混凝土有效孔隙率与目标孔隙率之间的关系,并探讨了掺有矿物掺合料时多孔混凝土有效孔隙率、透水系数、平面孔隙率、等效孔径和抗压强度之间的关系以及等效孔径大小的分布情况。
Through the case study we analyze the definitions,measurements and sizes of the equivalent aperture in different specifications home and abroad.通过案例比较分析了国内外不同规范中对等效孔径的定义、测定方法、大小关系等。
Test method for pore diameter of porous ceramicGB/T1967-1996多孔陶瓷孔道直径试验方法
The diameter of the objective of a telescope.孔径望远镜物镜的直径
The stem has a slightly smaller diameter than the valve bore.阀杆的直径略小于阀体孔的直径。
Discussion on Revamping of The Large Diameter Piercing Head of 10MN Vertical Piercing Mill10MN立式穿(扩)孔机大直径扩孔头的改造
The diameter of such an opening, often expressed as an f - number.孔径这种开口的直径，常以f数表示
The shaft leads directly to the reactor system.孔道直通反应炉系统
Probe into Large Diameter Direct Drainage Borehole Construction Technology in North China Type Coalmines华北型煤矿施工大孔径直排孔的工艺探讨
The cylinder diameter of raceway center(mm)－滚道中心圆直径(mm)
high efficiency drilling system for small and deep hole高效小直径深孔钻削系统
The human eye has a pupil diameter which, of course, varies.人眼瞳孔直径当然是可变的。
LARGE-DIAMETER LONGHOLE STOPING METHOD IN SPAIN西班牙大直径深孔采矿方法考察概况
Stage 3: >=400 microns in diameter, pseudooperculum.直径大于400微米（裂孔），假性包盖。
Research on the Bearing Performance of the Super-Long and Large-Diameter Bored Pile;超长大直径钻孔灌注桩承载性能研究
The Academic Optimization of Cutting Parameter of Machining Small-deep Hole小直径深孔加工切削用量的实验优选
The measurement of scotopic pupil diameter with noncontact tonometer非接触眼压计测量暗适应下瞳孔直径
EXPERIMENTAL RESEARCH ON NEGATIVE SKIN FRICTION OF LARGE-DIAMETER BORED PILES大直径钻孔灌注桩负摩阻力试验研究
Technology of 1000 meter directional borehole at large diameter for mine gas extraction顶板大直径千米长钻孔抽采瓦斯技术
Gas drainage in seam with large auto variable diameter bore holes自动变径大直径钻孔抽放煤层瓦斯试验
