1.Since the joint gap between a piston and a cylinder has great influence on the service life of an engine, and the primary factor influencing the joint gap is the deformation of a piston under working condition, it is important to show up the actual deformation of piston and for this purpose the finite element has been widely applied to analyze it numerically in China.活塞與氣缸的配合間隙，對于發(fā)動機(jī)的使用壽命影響很大，影響配合間隙的主要因素是活塞在狀態(tài)下的變形。真實(shí)反映活塞變形情況，國內(nèi)已廣泛采用有限元法進(jìn)行數(shù)值分析。

2.The action of air on an airplane in flight at low altitude is greater than that at high altitude.空氣對于低空飛行飛機(jī)的作用力大于高空飛行的飛機(jī)。

nucleonics（核子學(xué)）, semisomnus（半昏迷）, autoradiography（自動射線照相術(shù)）

radiophotography（無線電傳真）, anti-armored-fighting-vehicle-missile（反裝甲導(dǎo)彈）

FM (frequency modulation 調(diào)頻), telesat (telecommunications satellite通訊衛(wèi)星)

the transmission and reception of images of moving objects by radio waves（通過無線電波來發(fā)射和接受活動物體的圖像）;llumination intensity determination（照明強(qiáng)度測定）；the generation of heat by friction（摩擦生熱）；

3.The action of air on an airplane in flight at low altitude is greater than that at high altitude.空氣對于低空飛行飛機(jī)的作用力大于高空飛行的飛機(jī)。

antibody（抗體）, semisynthetic（半合成的）, futurology（未來學(xué)）

teleprinter +exchange – telex（電傳）, biological + rhythm – biorhythm（生理節(jié)奏）

AC (alternating current交流電), DC(direct current直流電),CCTV(closed circuit television閉路電視)

bsorption coefficient（吸收系數(shù)）, 2)adapter cable（適配電纜）, 3)air condenser（空氣冷凝器）, 4)air conditioner（空調(diào)）, 5)alternating current, 6)automatic control（自動控制）, 7) accumulator（蓄電池）, 8) analog computer（模擬計(jì)算機(jī)）

synchronous even pressure tamping system同步穩(wěn)壓搗固系統(tǒng)

non-synchronous even pressure tamping system異步穩(wěn)壓搗固系統(tǒng)

a) show the material related to something（表明與某種物體有聯(lián)系的材料）; b)prescribe the head nouns without any relationship between them and the given material or substance（規(guī)定與這種材料或物質(zhì)沒有必然聯(lián)系的核心詞）

e.g. cane sugar       蔗糖              coal gas煤氣         oil film油膜          saw dust鋸木屑

steel mill（軋鋼廠）, copper mill（軋銅廠）, paper mill（造紙廠）

computer factory    oil well（油井）   rubber tree（橡膠樹）  tear gas（催淚瓦斯）

air drill風(fēng)鉆   battery car電池汽車 oil control油壓控制器      spring governor彈簧調(diào)速器

bed post床架  motor drive電機(jī)驅(qū)動裝置    oscillator plate       振蕩片    table leg桌子腳

blinker light閃光燈      pine tree  松樹       resistant element電阻元件

block switch閉路開關(guān)          oil way油路          safety valve安全閥

blank bill空白票據(jù)                     square coil矩形線圈            fixed point定點(diǎn)                   floating point浮點(diǎn)               black pigment黑顏料            dark room暗室

butterfly nut蝶形螺母          butterfly valve       蝶形閥           catfish貓頭魚                      H-cable  H型電纜              U-steel槽鋼                            V-belt三角皮帶

4.Prefixes

5.Suffixes

band head光譜帶頭，brake head閘瓦托，cable head電纜線盒，cross head十字頭，distillation head蒸餾設(shè)備，fuel head油面高度，head banding磁頭條帶效應(yīng)，head effect對地電容效應(yīng)，headway車間距離，overhead間接費(fèi)用，管理費(fèi)

cutting face切削面，face cam端面凸輪，face hammer平錘 face shield面罩，face shovel正鏟挖土機(jī)，face tooth端面銑刀，interface界面

camera eye攝像機(jī)取景孔，eye bolt有眼螺栓，eye diameter入口孔徑，eye fidelity映像保真性，eye shade遮光眼罩

aeroplane nose飛機(jī)頭部，nose wheel前輪，spindle nose軸端部，軸頭，nose dive垂直俯沖，nose pipe放氣管，nose piece噴嘴

centering jaw定心凸輪，gripper jaw夾爪，jaw brake爪閘 jaw clutch爪式離合器，jaw plate鄂板，jaw vice鉗子，虎鉗

cheek board邊模板，crank cheek曲柄頰板，cheek teeth臼齒

joint tongue榫舌，switch tongue閘刀開關(guān)銅片，tongue scraper舌板式鏟運(yùn)機(jī)，整平機(jī)

hair compasses （微調(diào)）彈簧圓規(guī)，hair crack細(xì)裂縫，hair felt毛氈，cotton hair

hand brake手制動，hand lever手柄，hand radar便攜式雷達(dá)hand tally 計(jì)數(shù)器

filler neck漏斗頸，goose necks鵝頭樁，neck bearing彎頸軸承，swan neck鵝頸管，彎管

type shoulder胎緣，shoulder grader路肩用平地機(jī)

elbow bend彎頭，elbow separator彎頭脫水器，elbow union彎頭套管，wave guide elbow波導(dǎo)時管

finger damp指型插銷  clutch finger離合器壓盤分離桿  clod finger冷凝管

aerocoil leg 起壓架空氣油壓減震支柱 compression leg壓柱  leg vice老虎鉗

knee：knee pipe彎管，knee voltages曲線處電壓，soft knee線緩變彎折處，tank knee艙底接角

heel block墊板，heel piece繼電器跟片，heel slab后部底板，heel post門軸柱，柱腳

toe：toe bearing止推軸承，toe board擱腳板，toe crack焊縫邊緣裂縫，toe dog小撐桿

kidney joint撓性接頭    kidney-shaped transverse crack腎型橫向裂紋