Unverified80% confidenceDecision RuleTime unknown
落地泵的塑料底座和塑料气缸易开裂漏气，耐用款应选金属（铝合金/钢）气缸+金属底座，皮质活塞比橡胶密封更持久
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80%
Confidence
Long-term
Relevance
-
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