working box
noun
Mechanics (in certain types of pump) a hollow chamber, closed with a valve, which is moved to and fro inside a cylinder in the manner of a piston (now historical ).
Origin
Late 18th century.
| 单词 | working box |
| 释义 | working boxnoun Mechanics (in certain types of pump) a hollow chamber, closed with a valve, which is moved to and fro inside a cylinder in the manner of a piston (now historical ). Origin |
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