1.
Study of Numerical Simulation of Fan-pattern Hole Bottom Distance of Xiaodonggou Molybdenum Mine
小东沟钼矿扇形炮孔孔底距数值模拟研究
2.
Bottom margin
底部边距,底边,底线
3.
tap(ping) drill
螺丝孔钻，螺丝底孔钻
4.
ratio of the pole spacing to the bore diameter of the pole pieces
极靴的间距与孔径比
5.
short focal length (high aperture) lens
短焦距(大孔径)透镜
6.
positive contact off-bottom spacer
喷射眼距井底最优距离定位器
7.
counterbore with guide
有导柱的平底扩充孔钻
8.
embroidery ,openwork, with visible ground
透孔刺绣,有可见底布
9.
digital display measuring instrument for motor mounting hole
电机底脚孔数显测量仪
10.
Research on Mechanics of Charging Structure of Bottom Gas-Space in Deep-hole Blasting Engineering;
中深孔爆破孔底空腔装药机理的研究
11.
Relationship between Interpupillary & Innercanthal Distance and Maxillary Anterior Teeth of People with Normal Occlusion
正常者瞳孔间距、内眦间距与上颌前牙的关系
12.
The new measuring method for distance of the gas drainage hole and seam permeability
瓦斯抽采孔孔距及煤层透气性的测定方法
13.
Study on Rational Borehole Space of Crossed Boreholes for Gas Pre-drainage
预抽煤层瓦斯交叉钻孔合理孔间距的研究
14.
overall f - number
总光圈大小, 总孔径焦距比
15.
The container was filled with water that dripped through the hole.
容器底有个小孔容器内装满水，水通过孔滴下。
16.
Post pressure grouting of borehole cast-in-situ pile bottom and its quality control
钻孔灌注桩孔底后压浆施工工艺及质量控制
17.
The Study of High Bauxite Porous Ceramics and the Preparation of Porous Ceramics Bulk;
高铝质多孔陶瓷的研制及多孔衬底的制备
18.
Hydraulic Model Tests on Bottom and Middle Outlets for Three Gorges Project
长江三峡水利枢纽底孔和深孔水力学研究