The distortion deformation during diameter reduction not only changes the primary defects (such as hair-line seams) into screwy form, but also enlarges the primary cracks.
而减径变形中的扭转变形不但使原始缺陷形成螺旋状，同时还进一步扩展了裂纹。
During the process of reducing, in case of constant diameter reduction, the major elements responsible for tube wall increase are the rolling temperature and the stretch factor, etc.
钢管在减径过程中，减径量一定时，影响其增壁量的主要因素是钢管的轧制温度和张力系数等。
Decreasing the diameter of nozzle, increasing the concentration of cosolvent or decreasing the pre-expansion temperature could result in the diameter reduction of the microparticles.
减小喷嘴孔径、提高夹带剂浓度或降低预膨胀温度均可使微粒粒径减小。
It's difficult to sidetrack in the deep well in salt bed, especially the creeping of the gypsum-salt bed, hole diameter reduction and collapsion etc. are the biggest barriers for sidetrack drilling.
在深井盐层中进行侧钻困难较大，膏盐层的蠕动、缩径、垮塌等不稳定性是侧钻的最大障碍。
This paper investigates the life of diamond wire and effects of process parameters on the reduction of the wire diameter, warp and surface roughness.
研究了金刚石线的寿命及各切割参数对线径减少量、翘曲度、表面粗糙度的影响。
Reduction of RBC area, circumference, diameter, and spherical diameter of rats were only induced by IDA and exercise under IDA.
红细胞面积、周长、直径和球径仅在铁缺乏情况下缩小；
Previous research in this area has shown that, in general, above-ground drainage systems benefit from a reduction in pipe diameter to improve drain self-cleansing.
该领域过去的研究表明，一般说来，地面以上的排水系统能通过减小管道直径而受益，从而改进排水的自清理。
Fe-Ni nano-alloy was synthesized by chemical reduction, and the result of transmission electron microscopy(TEM) shows that the diameter of particles is very small.
采用液相还原法制得铁镍纳米合金，TEM测试结果表明该合金粒径小。
The paper analyzes the pros and cons of the reduction of pipe diameter, and points out that the proper reverse pumping can in effect elongate the pigging period.
分析了当量管径缩小的利弊，为管道的最佳运行提供了参考。
The reduction rate of the myocyte diameter and the cross section in the right lower limb was slower significantly than that of the control side.
肌细胞直径及截面积，电刺激侧较对照侧肢体下降速度明显减慢；
Reduction of the focus hole diameter strongly affects the electrons with large emission angle but its influence on electron focusing is less markedly than the influence of the variations in potential.
减小聚焦极孔径对大发散角的电子有影响，但对聚焦作用的影响不如改变电位明显。
The results show that with the reduction of nozzle diameter, the speed value of the core section is getting bigger, the scattering Angle of jet is getting lower and the focus of jet is getting better.
研究结果表明：随着喷嘴直径的减小，射流核心段速度值越来越大，射流的散射角越来越小，射流的集束性越来越好。
These factors include ratio of upper and lower roll diameter , reduction ratio , enterance angle and roll rotation speed.
因素有上下轧辊直径比、压下率、导入角和轧辊转速。
T he relation of the four parameters with initial slab thickness, initial slab width, width reduction and edger roll diameter was obtained and a new mathematical model was accomplished as well.
得出表征立轧时轧件断面特征的四个参量与侧压量、立辊直径、板坯来料厚度及宽度间的关系，并建立了新的数学模型。
Internal coating used in high pressure, large diameter and long distance gas pipeline has two main functions, one of them is anti corrosion and the other is drag reduction.
高压、大口径、长输天然气管道采用内涂层主要具有两大功能，一是防腐蚀，二是减阻。
RD is reduction in diameter. The variation of textures is ascribed to the activation of the different slips and twins which are affected by different effective compressive force.
这取决于不同主压应力所对应开启的不同的孪生及滑移系统。
RD is reduction in diameter. The variation of textures is ascribed to the activation of the different slips and twins which are affected by different effective compressive force.
这取决于不同主压应力所对应开启的不同的孪生及滑移系统。
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