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道路养护
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道路养护
Encyclopedia
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道路养护
释
road maintenance
道路养护
对道路的保养、维护和维修。目的是恢复道路完整性,保持使用性能,达到延长道路寿命,保证行车安全、舒适并节约运输成本,减少对环境不利影响的目的。包括对既有道路进行罩面或翻修,或对原有技术标准过低的路线和构筑物及沿线设施进行分期改善和添建。
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non linear operator
non-linear operator
nonlinear operator
nonlinear operator equation
nonlinear optical charac-ter in solid
nonlinear optical crystal
nonlinear optical device
nonlinear optical effect
nonlinear optical effect of liquid crystals
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non-linear optical microscope
nonlinear optical microscope
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nonlinear optical susceptibility
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nonlinear optimization
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