导孔 meaning in English
approach hole
feed hole
feedhole
feedthrough
guide hole
lead hole
pilot hole
Examples
- Center feed tape
中导孔输送带 - 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。 - We suggested one kind of planar metamaterials with periodic patterns tiled by two resonant components , which consist of triangular and pentagonal patch arrays and a metallic ground plate interconnected by via arrays together
摘要设计了一种由两种不同谐振单元套构而成并按周期排列组成的平面型异向性材料，该平面结构由三角形和五边型的金属贴片周期平铺构成上表面，并通过金属化导孔与下底板的金属底板连接。 - In adopting some trenching skills , such as pure grabbing , primary trenching , etc . , gtdw has done a good job in resolving the problem of trenching through the sandy or pebbled stratums of the changjiang river levee , furthermore , the trenching efficiency has been raised greatly
在造孔工序上，薄型抓斗塑性混凝土防渗墙技术采用纯抓和预打导孔等方法，较好地解决了长江堤防地基砂层及砂卵地层的造孔问题，并使造孔工效得到进一步提高。