1) first member of the Kongdian Formation
孔一段
1.
The sedimentary facies analysis and Palaeogeographic reconstruction have disclosed that the Kongdian uplift-Kongdian tectonic zone was initiated during the early stage of the deposition of the first member of the Kongdian Formation,and came into being during the late stage of the deposition of the first member of the Kongdian Formation.
笔者针对黄骅坳陷孔南地区古地理格局认识上存在的问题,通过沉积相分析和古地理格局恢复,证实孔店凸起-孔店构造带是从孔一段沉积早期开始发育的,在孔一段沉积晚期形成其雏形;孔二段沉积时期孔南地区为拗陷盆地。
4) one-keyhole-per-pulse
一脉一孔
1.
Through the sync control of welding current and plasma gas flow,the one-keyhole-per-pulse welding process has been realized successfully.
建立了以电流和等离子气流为控制变量的等离子小孔焊接熔透闭环控制系统,采用小波方法从焊接电弧电压信号中实时、准确地提取熔池穿孔信息,通过对2个参量的协调控制,成功地实现了“一脉一孔”的焊接工艺。
5) variable perforation density
分段射孔
1.
Based on the knowledge related with the filtration theory and fluid mechanics,the concept of variable perforation density and segmental perforation is proposed in consideration of the coupling of formation fluid with borehole fluid and fiel.
以渗流理论和流体力学相关知识为基础,考虑地层流体和井筒流体的相互耦合作用以及现场的实际需要,提出了变孔密分段射孔的概念,推导出了水平井变孔密分段射孔的井筒压降模型,并分析了孔眼密度变化对水平井井筒压降的影响,为水平井新型完井方式的井筒压降计算提供了理论依据。
6) perforation interval
射孔井段
1.
Determination of perforation intervals and optimal shot density of wells in bottom-water reservoirs with barriers is studied and presented.
研究了带隔板底水油藏油井的射孔井段确定问题,并提出了最佳射开程度的确定方法。
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