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85 Ａ axle
    音標 [ ˈæksəl ]
    Four identical tachometers are installed in the main-gear wheel axles (one for each wheel).
    四個相同的轉動速度計裝在主輪的輪軸上(每個輪轂一個)。
n.[C]輪軸，(機器的)軸
86 Ｂ backup
    音標 [ ˈbækʌp ]
    Turn the union and the locknut at the same time until the backup washer comes into contact with the equipment.
    同時轉動管節與鎖定螺帽，直到備用墊圈接觸到裝備。
n.[C][U]備用; adj.備用的
87 Ｂ balance
    音標 [ ˈbæləns ]
    Close the door and do the test with the spring balance again.
    把門關上並用彈簧平衡器再做一次測試。
n.[C][U]平衡; vi.保持平衡; vt.使平衡
88 Ｂ ballast
    音標 [ ˈbæləst ]
    The ballast, if necessary, shall be installed in the forward cargo-compartment at position 11.
    若有需要放置壓艙物的話，應安裝在前貨艙的位置11。
    The ballast units are part of the lamp units and are attached to the ceiling panels.
n.[U]壓艙物，穩壓器、鎮流器
89 Ｂ bar
    音標 [ bɑr ]
    Its three light bars then come on green.
    它的三根光條會出現綠色。
    Keep the girt bar (10) with the door.
    讓圍桿(項目10)保持在門上面。
n.[C]棒，橫槓; vt.閂住
90 Ｂ barrier
    音標 [ ˈbæriɚ ]
    Make sure that the exit safety barrier strap is in position.
    確認出入口阻攔安全帶就定位。
    Put a WARNING NOTICE in position to tell persons not to go into the area behind the safety barrier.
    放一張警告單讓人們不要進入阻攔安全帶圍起來的區域。
n.[C]障礙物，界線