Unverified88% confidenceTradeoffTime unknown
结构简单、无电子部件，仅靠重力钢球在锥形管道内振荡产生正压，耐用性好且不易损坏，但正因无独立阻力调节机构，精细调阻能力不如旋钮式产品
1
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88%
Confidence
Long-term
Relevance
-
First Seen
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