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grader
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Encyclopedia
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平地机
在前后桥之间装有可调节铲刀的、可对地面进行平整的土方机械。
工学
铲土运输机械
释
grader
平地机
利用刮刀平整地面的土方工程机械。
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origin of vascular plants
Origins and Branches of Poetry
origins of cells
origins of language
Origins of the Materia Medica
Origins Spectral Interpretation Resource Identification Security Regolith Explorer
Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer
Orimoyō
O-Ringen
Orinoco Delta
Orinoco Plains
Orinoco River
Orioles in the Spring Willows
Orioles Singing in the Willows
Orion
Orion aggregate
Orion Arm
Orion association
Orionid meteor shower
Orionids
Orion KL
Orion Loop
Orion manned spacecraft
Orion Molecular Cloud
Orion Nebula
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