主孔 meaning in Chinese
main aperture
main hole
original hole
Examples
- The hole is expected to reach its target depth of 5000 m in early 2005
预计主孔将于2005年上半年完成5000米的钻进目标。 - Since the inception of this project in 1998 , three pre - pilot holes have been completed and the main hole has reached a depth of over 3500 m
从98年开始，已经完成3个预先导孔的钻探工作，主孔钻进深度已经超过3500米。 - Southeast of the ccsd main hole , there are quite a few such reflectors , implying that eclogite bodies exist in the extension direction of the surface eclogite body
在ccsd主孔东南方深部重力高部位有多个这样的拱形反射，预示在地表陡倾榴辉岩的延伸方向还有多个一定规模的隐伏榴辉岩体。