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  1. ... the old man wants to read, start the switch and is adjusted the seat to and most suitable...old man wants to leave the seat, the mechanical arm stretches out and assists the old man to stand...

  2. ... pressure relief valve 機油壓力釋放閥 Oil pressure switch 機油壓力開關 2008-01-08 16:10:58 補充: Oil pressure...09 補充: Piston stroke 活塞行程 Pitman arm 畢特門臂 Pivot 樞軸 Plug wire 火星塞高壓線...

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