SIDE COWL, A removable cover around the sides of the 侧整流罩，

engine for access to the components on the engine.     发动机两侧，被移开后可以够到发动机部件的可卸罩

                                                     子。

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SIGHT GLASS, A glass window for observing fluid        检查窗，

quantity in the reservoir of a machine.                  用以观察机器的储液箱内液量的玻璃窗。

SIGNAL, An electrical quantity, such as a current or   信号，

voltage, that can be used to transport information for   电量的一种。如电流或电压能用于传送、通讯、控制或

communication, control, or calculation.                计算需要的信息。

SILICON CONTROLLED RECTIFIER, An electronic            硅控整流器，

device allowing current flow in one direction after the  当其控制极受到脉冲后，允许电流向单一方向流动的电

device has been pulsed at the gate.                    子装置。

SINGLE SHOT MULTIVIBRATOR, An electrical circuit       冲息多谐振荡器，

which produces a pulse when triggered by an input        当一个输人信号触发电路时产生的脉冲的电路。又称单

signal; a mono-stable multivibrator.                   稳态多谐振荡器。

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SIMPLIFIED FLIGHT PLANNING, Rapid determination      简化飞行计划，

of trip time and fuel using a chart providing these data 由提供旅途时间和燃油等资料的图表，来迅速定出从松

for the entire flight profile from brake release to landing. 刹车到着陆的整个飞行所需的时间和燃油的过程。