| 摘要 |
<p>1532045 Reciprocating pumps LIQUID CONTROL Ltd 28 Sept 1977 [28 Sept 1976] 40313/76 Heading F1A Two or more piston pumps 16, 17 are driven by a common air motor 1, the pump piston rods 8, 9 being attached to the motor piston 6 and passing through tubes 12, 13 which secure the pump cylinders 22 to the motor cylinder.</p> |
