- supporting bed
- 支承: fulcrum bearing; pecker bloc ...
- 层: I storey; tier; stratum
- 支承层 承重层 持力层: supportingcourse
- 下承层: support layer/subgrade surface
- 支承: fulcrum bearing; pecker block; [机械工程] supporting; bearing◇支承板 back plate; bearer plate; bolster plate; die plate; baseplate; 支承点 bearing point; 支承力 bearing force; supporting force; 支承轴 bolster; supporting axle; 支承柱 support column
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