| 单词 | counter-beam | 
| 释义 | counter-beamn. Printing.   (See quot. 1874.) ΚΠ 1874    E. H. Knight Pract. Dict. Mech.  				Counter-beam (Printing), a beam connected to the platen by two or more rods [by] which the reciprocating motion is communicated to the platen. This entry has not yet been fully updated (first published 1893; most recently modified version published online December 2020). < | 
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