1) reference reflecting hole
参考反射孔
1.
In this paper use horizontal hole and vertical hole as reference reflecting hole.
本文选用不同K值探头以横孔和柱孔为参考反射孔进行探伤实验，得到两条重要的规律：横孔与柱孔在同声程、相同K值下反射脉冲值是变化的；不同的K值探头对同声程、相同的参考反射孔之反射脉冲值也是变化的。
2) reference feedback
参考反馈
5) transmitted reference
发射参考
1.
Multiple-level parallel detection in ultra-wideband transmitted reference systems;
超宽带发射参考系统中的多级并行检测
2.
Based on ultra-wideband(UWB) transmitted reference(TR) technology,the interference model is analyzed for time division multiple access(TDMA) systems with conventional pulse pair structure,in which received reference and data received waveforms are both contaminated by inter-pulse interference.
本文对超宽带发射参考技术在时分多址方式和传统脉冲对结构下对高数据传输速率造成的符号间干扰模型进行了分析,证明其属于二阶符号间干扰系统,系数由波形相关矩阵决定。
6) perforation parameter
射孔参数
1.
Impact of perforation parameters on the flow efficiency of water injection wells;
射孔参数对注水井流动效率的影响
2.
By establishing the model of skin factor calculating for Perforation Gravel Pack technology, the influence of the perforation parameters such as the depth, diameter and density of perforated holes etc.
如果工艺和射孔参数选择得当,就可以使射孔对产层的伤害最小,否则将适得其反。
3.
Also the effects of the perforation parameters of hole depth,density,diameter,angle,perforating modes are discussed.
分析了文卫马地区不同类型油藏的储层性质———高渗透疏松砂岩油藏、裂缝性储集层、各向异性地层、低渗透储层、钻井与固井造成的损害带对射孔效率的影响,探讨了孔深、孔密、孔径、相位角、布孔格式等射孔参数对射孔效率的影响。
补充资料：第二孔(继发孔)型缺损
第二孔(继发孔)型缺损
ostium secondary defect
是心房间隔在形成上发生障碍，一般缺损较大，多在卵圆孔附近称第二孔(继发孔)型缺损。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条