[作業(yè) 運輸] 平面上的彈簧裝配 planing boat: 滑行艇spring mounting: 彈簧安裝; 彈簧墊架multi-step planing boat: 多斷級滑行艇stepped planing boat: 斷級式滑行艇three-point planing boat: 三點式滑行艇下載手機詞典可隨時隨地查詞查翻譯