- asphalt base course
- 沥青底层
English-Chinese construction dictionary (英汉建筑大词典). 2013.
asphalt base course
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Base course — in pavements refers to the sub layer material of an asphalt roadway and is placed directly on top of the undisturbed soil so as to provide a foundation to support the top layer(s) of the pavement. Generally consisting of a specific type of… … Wikipedia
base course — The layer(s) of a specified material of designed thickness placed on a sub base or subgrade to support the surface course. The base course and subgrade are structural elements of the pavement. In conjunction with the overlying asphalt surface,… … Aviation dictionary
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