| 单词 | contact vein |
| 释义 | > as lemmascontact vein 4. Geology. Hence contact-bed, contact-deposit, contact vein. ΚΠ 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 122 Contact, the plane between two adjacent bodies of dissimilar rock. A contact-vein is a vein, and a contact-bed is a bed, lying, the former more or less closely, the latter absolutely, along a contact. < as lemmas |
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