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单词 bed
释义 bed
[bed]
CHEMISTRY
The ion-exchange resin contained in the column in an ion- exchange system.
CIVIL ENGINEERING
1. In masonry and bricklaying, the side of a masonry unit on which the unit lies in the course of the wall; the underside when the unit is placed horizontally.
2. The layer of mortar on which a masonry unit is set.
GEOLOGY
1. The smallest division of a stratified rock series, marked by a well-defined divisional plane from its neighbors above and below.
2. An ore deposit, parallel to the stratification, constituting a regular member of the series of formations; not an intrusion.
GRAPHIC ARTS
The surface of a flatbed printing press on which the chase of composed type is secured for printing.
HYDROLOGY
The bottom of a channel for the passage of water.
MECHANICAL ENGINEERING
The part of a machine having precisely machined ways or bearing surfaces which support or align other machine parts.
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