SERVO, An automatic control system which checks its 伺服系統(tǒng)，

output against its input so as to achieve a desired   能檢查輸出和輸人數(shù)據(jù)，以便合適調(diào)控的自動控制系

control.                                            統(tǒng)。

SERVO ARMED, Hydraulic pressure for the servo is    伺服預位，

present to allow the servo to internally synchronize to 液壓使伺服系統(tǒng)內(nèi)部同步至適當?shù)奈恢�，但伺服系統(tǒng)的

the proper position, but the mechanical output of the 機械輸出還沒有接通。

servo is not connected.

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英漢對照民用航空詞典                                  BOEING

SERVO ENGAGED, The mechanical output of the        伺服系統(tǒng)預位，

servo is connected and the servo can move a surface or 伺服系統(tǒng)的機械輸出與伺服系統(tǒng)已接通，伺服系統(tǒng)可移

control                                            動一個平面或操縱。

SET SCREW, A small screw (usually headless) used to 定位螺絲釘，

fasten a pulley, wheel, or knob onto a shaft and prevent 小螺絲釘（一般是沒有釘頭的）用于將滑輪，車輪，或

rotation.                                          旋鈕緊固在軸輪上被免轉動。

SG, SEE - SYMBOL GENERATOR                         符號發(fā)生器，

                                                    見Symbol Generator．

SHEAR, The stress exerted on a material or, assembly 剪切力，

which tends to slide the mating surfaces parallel to each 加在材料或組件上的應力。該力往往導致互相平行的成

other.                                             對表面滑動。

SHIMMY, Rapid oscillations (left-right) of the landing 擺振，

gear wheels.                                        起落架輪子的快速的左右擺動。