directional hole
英
美
- 定向钻孔
directional hole的相关资料：
临近单词
direction peg
direction
direction-selective diffusion
directional earth leakage relay
direction of arrival estimation
directional detection algorithm
direction-predicting operator
directional-overcurrent relay
directional radiative intensity
Directional controlled blasting
Directionally butted brine well
Directional Finding and Ranging
