But the practical boreholes are often slope,and the distance between boreholes are variable.
在电磁波透视中,测量和资料的处理通常均按直孔或在纵向同一剖面的斜孔来考虑,而实际上钻孔一般是纵向二维变化的斜孔,孔间距离R存在着不确定性,这一因素对测量结果、正常场的求取及相关参数的计算都产生较大的影响。
The practice and application of kilometer-orientated large diameter and long-distance drilling
千米定向大直径长距离钻孔的实践与应用
Construction technique of directional drilling machine passing through long-distance complex stratum
定向钻长距离穿越复杂地层的施工技术
a long - distance [ round - the world ] flight
长距离[环球]飞行
Supporting the use of impact drilling electric drill. Drilling, hole spacing with hole depth should meet the design requirements.
（1）钻孔使用配套冲击电钻.钻孔时,孔洞间距与孔洞深度应满足设计要求.
Study on Rational Borehole Space of Crossed Boreholes for Gas Pre-drainage
预抽煤层瓦斯交叉钻孔合理孔间距的研究
The distance from A to B is as long as that from C to D .
a到b的距离和c到D的距离一样长。
The distance from A to B is longer than that from C to D .
A到B的距离比C到d的距离长。
Long-range and short-range side-scan sonar
长距离和短距离侧扫描声纳
On the flat, there are sprints, middle distance races and long distance races.
平跑项目有短跑、中距离跑和长距离跑。
Optimized drill-hole spacing and drilling techniques eliminate "blank zones" in longwall faces prone to outbursts
优化钻孔间距与工艺 消除突出综采面“空白带”
Centrifuge Tests on Bearing Character of Bored Pile;
钻孔桩受力性状的离心模型试验研究
being of a considerable distance or length.
距离或长度相当大的。
medium-, and long-distance events,
中程和长距离的比赛，
Are you proficient at judging distance ?
您擅长判断距离吗？
long distance cal
长途电话远距离呼叫
a short, long, great, etc distance
短的、 长的、 很大的...距离
Pole vaulters need long run-ups.
撑竿跳需要长距离助跑.
The length of any such line segment.
半距离这种线段的长度