常见例句雙語例句The base member (1) is pivotally connected to the lever member (2) by a pin (5) that provides a leverage fulcrum point.基板件（1）通過銷（5）樞轉設置在杠杆件（2）上，該銷（5）作爲杠杆的支點。ip.com 返回 fulcrum pin