1) drill stem method of coke removal
钻采清焦法
2) borehole tapping
钻孔法采脂
1.
According to the results,under the current technique term,for masson pine there is continuous oleoresin flowing for only 2 days in one borehole drilling period,and the borehole tapping is not suitable.
介绍了作者近年来对钻孔法采脂技术的试验情况和取得的初步结果。
3) borehole mining
钻井开采法
4) borehole mining
钻孔开采法
5) hydraulic method of coke remova
水力清焦法
6) auger coal mining method
螺旋钻采煤法
补充资料：冻土钻(见取土钻)
冻土钻(见取土钻)
dongtuzuan冻土钻见取土钻
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条