1.cone圆锥
cone sth off mark or
separate sth with cones用锥形标志标明或隔开: cone off a section of
motorway during repairs用锥形标志隔开维修中的一段高速公路* cone off parking
spaces that must not be used用锥形标志标明不准使用的停车位置.
2.curved(bending) Acurvedobject has the shape of a curve or has a smoothlybending surface....a small, curved staircase.
...the curved lines of
the chairs.
3.infrared
Of or relating to the range of invisible radiation wavelengths from about 750
nanometers, just longer than red in the visible spectrum, to 1 millimeter, on
the border of the microwave region.红外线的：一种波长在750毫微米（比可见光谱中的红光稍长）与1毫米（在微波波长的边缘）之间的不可见辐射的，或与其有关的
4.ultraviolet
(of radiation) with a wavelengththat is just beyond the violet end of the
visible spectrum（指辐射）紫外的:ultraviolet rays,ie causing sun-tanning紫外线.
5.motion动作;身体某部分的运动方式;姿态: with a sudden, single,
upward, downward, etc motion of the hand手的突然的﹑单一的﹑向上的﹑向下的...一动.
6.radar
system for detecting the presence, position or movement of solid objects within
its range by sending out short radio waves which they reflect雷达: locate an aircraft by
radar用雷达测定一飞机的位置. (b) equipment used for
this雷达装置: Enemy ships were
detected on the radar (screen).敌舰的影像已显现在雷达（屏幕）上. * [attrib作定语]a radar operator,
installation, scanner雷达手﹑设备﹑扫描天线
7.gammathe third letter of the Greek alphabet希腊字母表的第三个字母. A unit of magneticfield strength equal to one hundred thousandth (10&9{-5}) of an oersted.
伽马：磁场强度的一种单位，相当于一厄斯特的万分之一(10&9{-5})
Gamma raysare a type of electromagneticradiation that has a shorter wavelength and higher energy than X-rays.
8.coordinates坐标either of two numbers or
letters used to fix the position of a point on a graph or map: the x and y
coordinates on a graph图表上的x和y坐标* coordinates of
latitude and longitude经纬度
* [attrib作定语] co-ordinate geometry,
ie geometry using co-ordinates解析几何.
9.geodesic
Mathematics Of or relating to thegeometry of geodesics.
【数学】大地测量学的：大地测量几何学的或与之有关的
The shortest line between twopoints on any mathematically defined surface.
最短连线：任何数学定义的表面上的两点间最短连线
10.great
circle相对small circle小圆来说。
A segment of such a circlerepresenting the shortest distance between two terrestrial points.
大圆弧：大圆的一部分，表示球面上两点间的最短距离
11.deviation偏离，背离，偏差
There was little deviation from his
usual routine.他没有什麽反常的举动.
a deviation from the rules违背规则.
Party ideologists accused her of deviation.党内理论家谴责她背离了党的信条.
acompass deviation of 5, ie fromtrue north罗盘自差5度（相对于正北而言）
12.orbit（人造物体如卫星﹑航天器等飞行的）轨道: The spacecraft is in
orbit (ie moving in orbit) round the moon.该航天器在绕月球轨道上飞行. * How many satellites
have been put into orbit round the earth?有多少颗人造卫星已送入绕地球轨道?
引申义是“势力范围”
13.twinparadox
a phenomenon predictedby relativity. One of a pair of identical twins is supposed to live normally inan inertial system whilst the other is accelerated to a high speed in aspaceship, travels for a long time, and finally returns to rest beside his twin.The travelled twin will be found to be younger than his brother
14.deflection很像之前的deviation，有偏差的意思。
还有转向的意思
deflecting (deflect 1)
or being deflected转向. (b) [C] instance or
amount of this转向;偏斜度: The smallest
deflection of the missile could bring disaster.导弹有极微小的偏斜也可能酿出大祸.
复习：
we could reach a
deflection point.到达了拐点。
15.event
物理学中的event：
Physics A phenomenon or occurrencelocated at a single point in space-time, regarded as the fundamentalobservational entity in relativity theory.
【物理学】事件：在时空中位于一点的现象或事件，被认为是相对论中基本的观察实体
16.mass质量=惯性inertia
quantity of matter in a
body, measured by its resistance to acceleration by a force (ie its inertia)（物体的）质量（即其惯性的大小）.
17.lightspeed
the speed at which lighttravels in a vacuum; the constancy and universality of the speed of light isrecognized by defining it to be exactly 299,792,458 meters per second
接近3亿米/秒
18.a
meter物理学中定位的米是以光速来计算
19.dynamicquantities
20.ionic来自ion离子
electrically charged
particle resulting from the breakdown of atoms through solution in water and
making this solution a conductor of electricity离子.
21.sheer
luck纯粹的运气
sheer nonsense一派胡言* a sheer waste of time纯粹浪费时间* by sheer chance完全出於偶然地.
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