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英漢對照民用航空詞典                                     BOEING

SUMMATION UNIT, An electronic component for           燃油總和器，

adding fuel quantities in all tanks sending a signal to the 將所有燃油箱內(nèi)的燃油量相加，并將總油量用信號傳至

total fuel quantity display.                          油量顯示器的電子部件。

SUMP, A lowest point in the engine oil system or fuel 集油槽，

tank.                                                   發(fā)動機(jī)滑油系統(tǒng)內(nèi)，或燃油箱內(nèi)的最低點(diǎn)。

SUPPLEMENTAL DATA, Additional data stored in the      增補(bǔ)數(shù)據(jù)，

FMC memory, supplementing the loaded navigation         飛行管理計(jì)算機(jī)存儲器中的附加數(shù)據(jù)。用于補(bǔ)充導(dǎo)航數(shù)

data base.                                            據(jù)庫。

SUPPLEMENTARY MODES, Additional digital flight        輔助方式，

control system modes that are available, used when      附加的數(shù)字飛行控制系統(tǒng)方式，當(dāng)偏離正常方式時(shí)使

deviating from normal modes.                          用。

SURGE, A sudden change in the airflow through the     喘振，

compressor resulting in the compressor not being able     由于通過發(fā)動機(jī)的壓氣機(jī)的氣流的突然改變，而導(dǎo)致

to compress the airflow.                              壓氣機(jī)不能壓縮空氣的現(xiàn)象。

SWAGE, To squeeze together two or more items to       陷型模，

form a permanent unit. Example: a lead or steel piece   擠壓兩件或兩件以上的物體來制造一件永久性的元件。

on a cable which forms a stop or camlike unit. Also to 例如：一塊鉛或鋼在鋼索上形成一個(gè)止動器或凸輪之類的

reduce the diameter of tubing.                        元件。也可作減小管道的直徑之用。

SWITCH, A device which changes the condition of an    開關(guān)；

electrical system from on/off or open/close.              改變電氣系統(tǒng)通／斷或開／關(guān)的裝置。

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