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1. | geosynclinal concave |
| 地槽凹 |
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2. | 3、 为什么潜水艇既能浮在水面,又能潜入水底? |
| Why can a submarine float and sink? |
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3. | The casting is easy to suffer from deformation, surface sink and internal shrinkage. |
| 该铸件容易变形和产生表面缩凹、部缩孔。 |
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4. | incised palmate foot |
| 凹蹼足 |
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5. | Douglas' cul - de - sac |
| 道格拉斯陷凹, 直肠子宫陷凹 |
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6. | cavity plate,cavity Block |
| 凹模 |
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7. | fovea capitis femoris |
| 股骨头凹 |
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8. | hilar depression |
| 脐凹 |
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9. | depression of land |
| 陆凹 |
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10. | fovea centralis |
| 中央凹 |
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