| 单词 | working barrel |
| 释义 | > as lemmasworking barrel working barrel n. Engineering the cylindrical chamber in which the plunger or piston of a pump moves to and fro or up and down. ΘΚΠ society > occupation and work > equipment > pump > [noun] > cylinder working barrel1735 tube1877 1735 M. Clare Motion of Fluids 71 A Row of Pistons are always bearing against the working Barrel. 1813 T. Martin Circle Mech. Arts 495/2 The piston is solid and its rod passes through a collar of leather in the plate, and closes the upper end of the working barrel. 1946 Jrnl. Royal Soc. Arts 94 375/1 The oldest method is by pumping, the plunger and working-barrel being placed near the bottom of the well. 2011 W. Renpu Adv. Well Completion Engin. iii. 145/1 The rod-insert pump has inside and outside working barrels. < as lemmas |
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