1) sewer pipe hole slot
沟管洞缝
2) well pipe hole slot
井管洞缝
3) fracture and cavern
缝洞
1.
Prediction of Ordovician carbonate fracture and cavern in Tahe area
塔河奥陶系碳酸盐岩缝洞预测
5) Yindonggou
银洞沟
1.
Based on detailed researches of the existing geological data,the authors consider that the Xigou area and Yindonggou silver deposit are similar in geological settings,geochemical and geophysical characteristics,etc.
在深入研究前人工作成果的基础上,提出银洞沟外围西沟段与银洞沟已知大型银金矿具相似的成矿条件,通过对比研究后提出该区可望找到与银洞沟类似矿体的认识,并认为隐伏矿体可能以金为主,伴生银。
6) Longdong Gully
龙洞沟
1.
Ecological and Economic Zoning of Debris-flow Basin and Regulating Measures——A Case Study of Longdong Gully on the Upper Reach of Minjiang River;
泥石流流域生态经济分区及关键调控措施——以岷江上游干旱河谷区龙洞沟为例
2.
Prevention and control of debris flow in dry valley of the upper Minjiang River:A case study of Longdong Gully;
岷江上游干旱河谷区龙洞沟泥石流及其防治
补充资料：成都无缝钢管厂管坯在菌式穿孔机上穿孔
成都无缝钢管厂管坯在菌式穿孔机上穿孔
成都无缝钢管厂管坯在菌式穿孔机上穿孔
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