elastic layer
| system theory
| elastic layer | |
| bridg.constr. | 弹性层 |
| system theory | |
| met. од. | 系统理论 |
| space од. | 系统论 |
| systems theory | |
| anim.husb. | 系统论 |
| environ. | 系统理论 |
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| 弹性层 | |||
| 弹性垫层 | |||
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elastic layer : 7 phrases in 5 subjects |
| Engineering geology | 1 |
| Nursing | 1 |
| Rail transport | 1 |
| Road construction | 1 |
| Technology | 3 |