常見(jiàn)例句雙語(yǔ)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(guò)銷（5）樞轉(zhuǎn)設(shè)置在杠桿件（2）上，該銷（5）作為杠桿的支點(diǎn)。ip.com 返回 fulcrum pin