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MX  门槛=20%  门=cost>80  步长 up=0.3 down=0.3  条数=7
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20230610_ManalPromotion / Slot car race set词组
  kw    autopista electrica             6.60 → 6.90    up    acos=13.5%   cost=223.06   clicks=82
  kw    pista carros electrica          0.30 → 0.10    down  acos=20.7%   cost=434.91   clicks=107

SP Campaign Recommendation - Suggested Products - 03/30/2022 a70a69 / AGM MASTECH - Slot Cars/Racing
  kw    agm mastech                    30.50 → 28.10   down  acos=20.2%   cost=425.02   clicks=572
  kw    pista electrica de carreras    12.80 → 10.40   down  acos=inf     cost=91.34    clicks=16
  kw    agm                            30.80 → 28.40   down  acos=inf     cost=1450.42  clicks=865

20230610_ManalPromotion / Slot car race set精准
  kw    pista de carreras f1            7.40 → 5.00    down  acos=inf     cost=90.61    clicks=12
  kw    agm                            11.90 → 9.50    down  acos=inf     cost=107.95   clicks=171