hole bottom的例句大全

in particular, the galactic center cluster and the enormous black hole sagittarius a* are within the bright region near the bottom.

其中最特别的是影像下端的亮区，银河系中心星团及超级黑洞-人马座A*都位于这个区域内。

hole end is that one deep clear pool , depths do not see that the bottom , the brume come, make people chilly magical cold bone.

洞尽头是一泓清潭，深不见底，水气袭来，令人凄神寒骨。

the bottom permeable stone, the spacing ring and the cutting ring are equipped in the hole of the foundation;

在底座孔中装有下透水石、限位环和环刀；

optimization on installment engineering of the operating gate of bottom hole sluice flood in the three gorges hydroelectric station

三峡水电站泄洪底孔工作门的安装施工

showed a straight cylinder valve flap, flap valve bottom bottom, with bottom discharge valve hole, the hole sealed nut.

阀瓣呈直圆筒形，阀瓣底部有个底孔，阀体下部设有排污孔，该孔安装有密封螺丝帽。

body: hardcoat anodized, precision machined mounting surface with tapped hole accessible from bottom side.

身体：硬膜阳极氧化，精密加工与螺纹孔安装从底部可接近表面。

3d static analysis method of general bottom hole assembly ( bha) under small deflection

通用下部钻具三维小挠度静力分析方法

the mattress is equipped with an osculum (4) running from top to bottom and a defecation hole (6) positioned on the hip of the patient.

床垫设有上下贯通的排水孔（4）和位于病人臀部的排便孔（6）。

application of selective perforation system for optimizing bottom hole production behavior

选择射孔系统优化井底生产动态

deposition of ti-si-n thin films at the bottom of deep hole by pulsed-d.c. pcvd

脉冲直流PCVD技术在盲孔底部沉积Ti-Si-N薄膜

research on the filling of dry sand for vertical pipe with bottom blind hole for eps pattern

干砂对EPS模样垂直向下盲孔充填性的研究

application of the bottom hole path cad to the rock bit insert arrangement design

井底轨迹图CAD在牙轮钻头布齿设计中的应用

application of bp neural network for prediction of flowing bottom-hole pressure in flowing well

BP神经网络在自喷井井底流压预测中的应用

numerical simulation study on bottom hole flow field of pdc coring bits

PDC取心钻头井底流场的数值模拟研究

analysis of bottom-hole stress field of two-stage pdc bit

双级PDC钻头井底应力场分析

laplace space solution of the bottom hole pressure in double-porosity composite confined reservoir

双孔复合封闭储层中井底压力的Laplace空间解

transient ipr curves are a set of curves between flow rate and bottom hole pressure under different time.

不稳定IPR曲线是指不同的时间下井底压力与流量的关系曲线。

an ipr equation of a production well describes the relationship between production rate and the bottom hole pressure.

油井的流入动态（IPR）曲线是描述油井产量和井底流压关系的曲线。

according to bond crack theory, this paper sets forth a new rock drillability testing method which takes the detritus from the bottom hole as the research subject. a correlation model of drillability grades and cuttings fractal dimensions is established.

依据Bond裂纹学说，提出了一种以井底返出的岩屑为对象的岩石可钻性测试方法，并建立了岩石可钻性极值和岩屑分形维数的关系模型。

using mohr coulomb criteria, the sand production model is founded. the calculating method of the critical fluid pressure of bottom hole is given.

根据Mohr-Coulomb准则，建立了相应的出砂预测模型，给出油井出砂时临界井底流压的计算方法。