释义 |
borehole periscope
- 潜望镜qián wàng jìng
periscope
- 展望镜zhǎn wàng jìng
periscope
- 地上凿洞dì shàng záo dòng
borehole
- 钻井zuàn jǐng
borehole; well drilling
- 井径jǐng jìng
hole diameter; borehole diameter
- 钻孔zuàn kǒng
drill; drill hole; perforate; borehole; solid boring; punching
|