THERMISTOR, A temperature sensitive resistor whose    熱敏電阻，

resistance changes with a change in temperature.        一種電阻值隨溫度的變化而變化的對溫度敏感的電阻。

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THERMOCOUPLE, Two different metal wires joined at        熱電偶，

both ends for temperature measurement. When both           用來量取溫度，兩端相連的兩根不同金屬導線。當兩端

junctions are at different temperatures, an electric     之間有溫差時，金屬絲內(nèi)即產(chǎn)生與溫差成比例的電流。

current is produced proportional to the temperature

difference.

THERMOSTAT, A component set to operate at a              恒溫器，

definite temperature for controlling electric circuits and 用來在一定溫度下操作，以控制電路和活門的部件。

valves.

THERMOSTATIC SWITCH, A heat controlled,                  恒溫電門，

temperature sensitive switch which opens at a preset        一個熱控的、在預定溫度斷開的熱敏電門。

temperature.

THR HOLD, SEE -THROTTLE HOLD                             油門保持，

                                                           見Throttle Hold．

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英漢對照民用航空詞典                                   BOEING

THRESHOLD (NO. 1), The bottom part of an opening in 門檻，

a fuselage doorway.                                  機身艙門開口的底部。

THRESHOLD (NO. 2), The approach end of the runway.  跑道頭，

                                                     機場跑道到場的一端。