*opaque
n. 不透明物 adj. 不透明的;不传导的
**echo
n. 回声,回波
*resound
vi. 回响(to be filled with sound);鸣响(to be loudly and clearly heard)
*leverage
n. 杠杆作用
**forcemeter
n. 测力计
*celsius
adj. 摄氏的 n. 摄氏度
【例】Boiling point is 100 Celsius.
*filament
n. 灯丝;细丝
【记】fila(丝)+ment→灯丝;细丝
**circuitry
n. 电路;电路系统
magnetic
adj. 有磁性的(with the properties of a magnet)
【例】The block becomes magnetic when the current is switched on.
*diffuse
v. (使)传播,(使)扩散(to scatter; spread)
【记】di(分开)+f+fuse(流)→分流→扩散
【例】The winds diffused the smoke throughout the neighborhood.
**emit
vt. 发出;放射(to discharge; give off)
【例】All the cars that emit poisonous gas have been called back.
*density
n. 密度
【例】The population density is very high in Hong Kong.
*foam
n. 泡沫(bubble; froth)
*clutter
n. (雷达显示器上的)杂乱回波;混乱,杂乱 vt. 使混乱(to litter; disarray)
【例】My office is filled with useless clutter.
*thaw
v. (使)溶化;(使)融解(to melt; defrost)
【例】Last week it was so warm that the frozen pond thawed.
*constituent
n. 成分(component)
**incompatible
adj. 不兼容的(inconsistent; incongruous)
【记】in(不)+compatible(融合的,兼容的)→不兼容的
**compatible
adj. 融合的,兼容的(harmonious; congruous)
【例】Is this software compatible with my computer?
***mechanics
n. 力学;机械学
*cohesion
n. 内聚力;附着,结合;凝聚力
【例】Cohesion is the force causing molecules of the same substance to stick together.
*impetus
n. 推动力(urge; momentum)
【记】im(进入)+pet(追求)+us→追求力→推动力
【例】The physical object in motion needs impetus. ∥His longing for another kind of life is a major impetus for his hard working.
*expedite
vt. 使加速(to speed up; hasten)
【记】ex(出)+ped(脚)+ite→脚跨出去→加速
【例】Use of a rotary vacuum evaporator will expedite the concentration steps in the procedure. ∥The person I talked to on the phone promised to expedite the shipment of the book I ordered.
*radiate
v. (使)散发;发射(to emit; give off)
【例】Heat radiated from the stove.
*indexer
n. 分度器
*elastic
adj. 有弹性的,能伸展的(easily resuming original shape after being stretched)
【记】e+last(持久)+ic→能伸展的
【反】inelastic(adj. 无弹性的)
*cohesive
adj. 有凝聚力的
**aerodynamics
n. 空气动力学
**disperse
v. 消散,驱散
【记】di(分开)+sperse(散开)→分散开→驱散
【反】focus(v. 聚集);aggregate(v. 聚集)
**fathom
n. 英寻(水深测量单位,等于1. 83米)v. 彻底明白,领悟(to understand thoroughly)
【记】fathom原意为“伸展手臂测量”,引申为“伸展手臂后的长度”
*candlepower
n. 烛光
*interatomic
adj. 原子间的
【例】Interatomic forces were considered as a function of the separation of atoms.
*edgewise
adv. 刀口朝向外边;沿边
*brink
n. 边缘(margin; edge; rim)
【例】A fence was built along the brink of the cliff to prevent accidents.