采用固定冲程的柱塞泵，省去复杂的机械冲程调节装置，使柱塞直接推动膜片工作。
Adopting piston pump with fixed stroke, the piston directly propels the diaphragm, thus deleting the complex mechanic stroke adjustment equipment.
采用固定冲程的柱塞泵，省去复杂的机械冲程调节装置，使柱塞直接推动膜片工作。
Adopting piston pump with fixed stroke, the piston directly propels the diaphragm, thus deleting the complex mechanic stroke adjustment equipment.
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