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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