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upper Paleozoic | |
oil | 上古生界 |
limestone | |
gen. | 石头 |
geol. | 灰岩; 灰石 |
hydroel.st. | 石灰岩; 灰岩; 灰岩,石灰岩; 灰岩,石灰岩 |
sport. | 石灰石 |
and | |
gen. | 并 |
hornfels | |
geol. | 角页岩 |
| |||
上古生界 |
upper Paleozoic : 4 phrases in 3 subjects |
Earth sciences | 1 |
Engineering geology | 2 |
Geology | 1 |