HOLDING FIX, A specified fix identifiable to a pilot by 等待定位點，

NAVAIDs or visual reference to the ground used as a     等待過程中在建立并保持飛機位置時使用的一個指定

reference point in establishing and maintaining the   定位點。飛行員可根據(jù)導(dǎo)航臺或地面目機參考識別該定位

position of an aircraft while holding.                點。

HONEYCOMB, A hexagonal material made of metal or      蜂窩，

Nomex for sandwich construction of panels.              一種用金屬或Nomex制成的六角形材料，用以制造夾芯

                                                      面板。

HORIZONTAL STABILIZER, The moveable horizontal        水平安定面，

surface of the empennage used for pitch trim.           飛機尾翼的可動水平面，用來控制俯仰配平。

HOT BATTERY BUS, A battery bus which is not           熱電瓶匯流條，

switched and is always energized from the airplane      無電門控制的電瓶匯流條，始終由飛機電瓶供電。

battery.

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英漢對照民用航空詞典                                   BOEING

HUB CAP, An external covering to the axle of the main 輪榖帽，

landing gear wheels.                                  主起落架輪軸的外罩。

HYDRAULIC FUSE, A device in the hydraulic system    液壓保險，

for stopping fluid flow when a leakage occurs in a line 液壓系統(tǒng)內(nèi)的一種裝置。用于在保險的下游管線上發(fā)生

downstream of the fuse.                             泄漏時，阻止液壓油流動。

I

IAS, SEE - INDICATED AIRSPEED                       指示空速，

                                                     見 Indicated Airspeed．

IGNITER (IGNITER PLUG), An electrical device for    點火器（火花塞），