The development and application of this device provided a necessary mean for the slim hole track measurement and directional window cutting.
它的开发、应用成功，为小井眼、短半径井的井眼轨迹测量、斜向器定向开窗作业提供了必备的测量手段。
The formation of the bottom hole rock-disintegrating track of the mono-cone bit with wedge teeth was studied, and simulation software for the track pattern was developed.
在此基础上以楔形齿为对象研究了偏心单牙轮钻头井底破岩轨迹的形成，并编制了井底轨迹图仿真软件以模拟牙齿的凿岩轨迹。
May operate air-track, rotary, down-the-hole or other drilling machines to drill blast holes or may direct drilling of blast holes.
操作空气运作轨道，旋转，向下钻孔机或其他钻探机钻爆破洞或直接钻爆破洞。
Design of surface mount PCB makes an impact on soldering quality. The design of soldering pad, track layout, location and through hole treatment are discussed.
表面贴装印制板设计直接影响焊接质量，将专门针对表面贴装印制板的焊盘设计、布线设计、定位设计、过孔处理等实用技术作一些探讨。
Well body track curve can be drawn out through surveying the depth in the hole. It can be...
通过对井筒不同深度的测量，即可得出井身轨迹曲线。
With increasing down-hole temperature, average track lengths also decrease, however, annealing anisotropy of fission tracks in apatite increases.
磷灰石中古裂变径迹的长度也随井温升高而减小，而磷灰石古径迹退火的各向异性却随井温升高而增大。
Drill holes on the top of the doorway according to the hole position on the guiding track. Fill in plastic plug when necessary.
根据导轨孔位在门洞上端钻孔，必要时打入胶塞。
Drill holes on the top of the doorway according to the hole position on the guiding track. Fill in plastic plug when necessary.
根据导轨孔位在门洞上端钻孔，必要时打入胶塞。
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