1)  horizontal drilling
平孔
1.
A milisecond blasting method of combining the upper vertical drilling with lower horizontal drilling is successfully carried out by strictly controlling the blasting parameters and charge amount,the structures and staff are protected.
采用上部垂孔与下部平孔结合的微差爆破法,通过严格控制爆破参数及装药量,成功地控制了爆破飞石。
2)  Horizontal hole
水平孔
3)  horizontal orifice
水平孔口
4)  subhorizontal drilling
近水平孔
1.
Design and experiment of downhole hydraulic packer for coalbed methane subhorizontal drilling;
煤层气近水平孔孔底水力封隔器设计与试验
5)  Horizontal Channel
水平孔道
1.
Finite Element Contact Analysis of "O" Ring Sealing Structure in Horizontal Channel;
平孔道“O”形环密封结构有限元接触分析
2.
According to the distribution character of horizontal channel and precise requirements of neutron flying direction,the sliding-station measuring was designed by utilizing the total station and computerized numerical control lathe to realize the precised location for horizontal channels in the closed and narrow decay tank.
针对水平孔道的"偏心"分布特点、中子引出点及其飞行方位的精度要求,利用全站仪与数控车床配套,设计"平移测站法",实现在密闭、狭小的衰变箱筒体内对水平孔道的精确定位。
6)  horizontal cell tile
水平孔砖
参考词条
补充资料:平均孔半径
分子式:
CAS号:

性质:孔性固体孔的形状和大小极为复杂,为了研究和应用方便,常将这些孔假设为半径是r的某种特定几何形状的孔,根据r及所设几何形状求出的比孔容或比表面应与实际测定值相等,r称为平均孔半径。若设孔为圆柱形的,l为1g固体孔的总长度,则比孔容V=πr2l,比表面S=2πrl。故r=2V/S,即由比孔容和比表面可得出r。大部分常吸附剂的r值基本上与由孔径分布求出的最可几半径接近,故平均孔半径是孔性固体的有用参数。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。