泥沼地区路基 subgrade in bog zone； subgrade in morass region； subgrade in swampland 膨胀土地区路基；裂土地区路基 subgrade in swelling soil zone； subgrade in expansive soil region ..
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字典,英汉机械工程大词典,conversion,c... ... subharmonic resonance,subharmonic resonance,次谐波共振 subharmonic oscillation,subharmonic oscillation,次谐波振动 subharmonic frequency,subharmonic frequency,次谐波频率 ...
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