井筒十字中線標定 setting-out of shaft center: 井筒中心標定setting-out line: 測定的線; 劃定的線through feed setting out machine: 通過式伸展機center line through plate: 中線貫通板; 中縱通板pto shaft center line: 動力輸出軸軸心線下載手機詞典可隨時隨地查詞查翻譯