Pull （2）FORCE力
ED: [C usually singular 一般用单数] a strong physical force that makes things move in a particular direction 拉力，引力
Eg: the gravitational pull of the moon 月球的引力
Weight
ED:（1）N-COUNT Weights are metal objects that weigh a known amount and that are used on a set of scales to weigh other things. 砝码
（2）N-COUNT You can refer to a heavy object as a weight, especially when you have to lift it. (尤其指必须举起的) 重物
Eg: Straining to lift heavy weights can lead to a rise in blood pressure.
用尽全身力气举起重物会导致血压升高。
Vertically 垂直地
近义词adv.perpendicularl
词根：vertical
adj.
vertical 垂直的，直立的；[解剖] 头顶的，顶点的
n.
vertical 垂直线，垂直面
verticalness 垂直
Eg: Well, we cut it into vertically simple pieces.
我们把它分割为垂直简单的部分。
定律表达
1.Law of motion 运动定律
n.one of three basic laws of classical mechanics
同义词： Newton's law of motion / Newton's law
2.Newton's first law
n.a body remains at rest or in motion with a constant velocity unless acted upon by an external force
同义词： first law of motion / Newton's first law of motion
3.Newton's second law
n.the rate of change of momentum is proportional to the imposed force and goes in the direction of the force
同义词： second law of motion / Newton's second law of motion
be proportional to 与……成正比
Eg: The increase in price is proportional to the improvement in the car.
在小车方面， 价格的增加相应比例提高了性能。
explicitly
ED: adv. 明确地: very clear and complete, leaving no doubt about the meaning, showing or referring very openly to nudity, violence, or sexual activity
近义词
specifically , definitely , particularly , positively
词根: Explicit
名词:explicitness
反义词: Implicit
Cancel vt.相互抵消
词源 : cancel源于拉丁文cancelli(格子)。在中世纪， 罗马文牍员在抄写出现笔误时就在上面划斜线， 使成格子状， 表示“注销”。
近义词 : abandon, abort, call, call off, cry off, drop, recall, repeal, rescind, revoke, scrap, scrub 取消
反义词 : continue, keep 继续，保留
gravitational
派生词
词根：grave
adj.
grave 重大的；严肃的；黯淡的
gravitational [力] 重力的，[力] 引力的
graven 不可磨灭的，铭记在心的；雕刻的
gravitative 受重力作用的；万有引力的
adv. gravely 严重地；严肃地；严峻地；沉重地
n.
grave 墓穴，坟墓；死亡
gravitation 重力；万有引力；地心吸力
gravitas （拉）庄严；庄重；庄严的举止
graveness 重大，严重；认真
gravimeter 比重计；[地物] 重力计
graviton [相对][高能] 引力子；万有吸引力
v.graven 雕刻（grave的过去分词）
vi.gravitate 受引力作用；被吸引
vt.grave 雕刻；铭记
elliptical Adj.
ED: 1.having the shape of an ellipse 椭圆的；椭圆形的
Kepler published his discovery of the elliptical orbits of planets in 1609. 1609
年开普勒公布他的发现，认为行星轨道为椭圆形。
2.elliptical speech or writing is difficult to understand because more is meant than is actually said 〔言辞或文章〕晦涩的，隐晦的
The language is often elliptical and ambiguous.
语言经常是隐晦和模棱两可的。
set aside
ED: PHRASAL VERB If you set aside a belief, principle, or feeling, you decide that you will not be influenced by it. 把…抛在脑后
Eg: He urged the participants to set aside minor differences for the sake of achieving peace.
他敦促与会者把小分歧抛于脑后，以求实现和平。
Nonexistence
N-UNCOUNT Nonexistence is the fact of not existing. 不存在
Eg: I was left with puzzlement as to the existence or nonexistence of God.
Unambiguously
adv. 1. in an unambiguous manner
同义词： unequivocally / without ambiguity
2. so as to be unique
同义词： uniquely
Illusion
1. N-VAR An illusion is a false idea or belief. 幻想
No one really has any illusions about winning the war.
事实上没有人对打赢这场战争抱任何幻想。
2. N-COUNT An illusion is something that appears to exist or be a particular thing but does not actually exist or is in reality something else. 假象
Floor-to-ceiling windows can look stunning, giving the illusion of extra height.
从地板直抵天花板的窗户看上去非常漂亮，有增加高度的假象。
… Stubbed his toe on a large stone.
stub one's toe
V-T If you stub your toe, you hurt it by accidentally kicking something. 不小心踢到,碰伤脚趾
I stubbed my toes against a table leg.
我不小心把我的脚趾踢到一条桌腿上。
The moons of Jupiter 木卫
Using it, he first observed the moon in the fall of 1609, then the moons of Jupiter, and sunspots.
1609年夏天，伽利略曾第一次用它观察了月球，之后他还观察到了木星的卫星和太阳黑子。
Propagation
词根:propagate (vt./vi.) 传播，宣传，繁殖
crack propagation裂纹扩展
back propagation[人工智能]反向传播
light propagation光传播
error propagation错误传播，误差传播
propagation velocity传播速度；传输速度
propagation path传播路径，传播通路
propagation loss[计]传播损耗；传输损耗
propagation delay传播延迟
vegetative propagation营养繁殖；植物无性繁殖
fracture propagation断裂传播；裂缝延伸
propagation constant传播常数
asexual propagation无性繁殖
光波表达收集
Wavelength, radio wave, microwave, Infrared（红外线）, visible light ,shorter wavelength ( Ultraviolet, X rays , gamma rays)
Wavelike disturbance
参考:Wave disturbance n. 波扰动；[气象] 波状扰动
Day2
contract
ED: V-T/V-I When something contracts or when something contracts it, it becomes smaller or shorter. 缩小; 缩短; 使缩小; 使缩短
Eg: Blood is only expelled from the heart when it contracts.
心脏收缩时，血液才从心脏射出。
in terms of
1用…的话，用…字眼，以…的措辞；从…角度来讲
2在…方面，就…来说；关于…
3根据，依据
Eg: Well, nothing in terms of the math.
当然,那是从数学角度来说的。
Patant office
N a government department that issues patents 专利局 ( abbr: Pat. Off)
Einstein is given the credit for the new theoryb …
Eg: Galileo is usually given credit for being the "Father of the Scientific Method".
伽利略通常被认为是“ 科学方法之父”。
This film is often given credit for the first time a camera was pointed directly at the sun.
影片经常因开场的第一个镜头直接对着太阳而赢得赞誉。
Postulate n/vt
ED: something believed to be true, on which an argument or scientific discussion is based 假定，假设，公理〔被认为理所当然的事实，是推论的基础〕 【正式】
→ hypothesis
[+ of ]
Eg: the basic postulates of Marxism
马克思主义的基本假设
intrinsic
a. 内在的， 本质的， 固有的 The intrinsic value of a coin is the value of the metal it is made of. 一枚钱币的内在价值就是铸造这枚钱币的金属的价值。
联想记忆
intr(看作intro， 向内)+insic(看作inside)→内在的， 本质的
同义词
inherent(a. 内在的， 固有的)； essential(a. 本质的)； innate(a. 天生的， 固有的)
反义词
extrinsic(a. 外来的， 外在的)； external(a. 外面的， 表面的)
Multiplied / divided by 被乘/除
“结束”的表达
Put an end to （n.） 结束；终止
近义词：drop / determine / conclude / come to an end
Eg: It might seem impossible, but once you decide to put an End to Busy, you have taken the biggest step.
这似乎不可能，但一旦你决定要结束忙碌，你就已经迈出了最大的一步。
Diagram 图表
Procedure 步骤
A cesium clock铯钟
铯钟工作原理:
A cesium clock operates by exposing cesium atoms to microwaves until they vibrate at one of their resonant frequencies and then counting the corresponding cycles as a measure of time. 一个铯钟的工作原理是：将铯原子暴露于微波中，直到它们以一个频率共振，然后以一个相应的周期作为时间度量。
velocity
ED:1. [C,U] the speed of something that is moving in a particular direction technical 速度 【术语】
the velocity of light光速
The speedboat reached a velocity of 120 mph.
快艇的时速达到了120英里。
a high velocity bullet高速子弹
2 [U] a high speed 高速
Martinez had good velocity on his fastball.
马丁内斯的快球速度极快。
presence
N-UNCOUNT If you refer to the presence of a substance in another thing, you mean that it is in that thing. 存在
The somewhat acid flavour is caused by the presence of lactic acid.
略有的酸味是由乳酸的存在造成的。
detect vt.
ED: to notice or discover something, especially something that is not easy to see, hear etc 发现，察觉〔尤指不易觉察到的事物〕
Eg: Many forms of cancer can be cured if detected early.
如果发现得早，许多种癌症都可以治愈。
Latitude & longitude 纬度&经度
One is free to （do） 一个人能自由的……
As one masters 3000 and completes with such a partner, one is free to leave and create a new ascending partnership of greater compatibility if one so chooses.
当你掌握了3000股并和这样一个伴侣终结关系时，你就能自由离开并创造一个更相容的提升新伴侣，如果你这么选择的话。
validity
ED: N-UNCOUNT The validity of something such as a result or a piece of information is whether it can be trusted or believed. 可信性
Eg: Shocked by the results of the elections, they now want to challenge the validity of the vote.
震惊于这些选举的结果，他们现在想质疑投票的可信性。
Patch
ED: N-COUNT A patch of land is a small area of land where a particular plant or crop grows. 小块田地
Eg: ...a patch of land covered in forest.
…一块长着树林的田地。
Spatial adj. 空间的
Coordinate
ED: 1.N-COUNT The coordinates of a point on a map or graph are the two sets of numbers or letters that you need in order to find that point. 坐标
Eg: Can you give me your coordinates?
能给我你的坐标吗？
2. V-T If you coordinate an activity, you organize the various people and things involved in it. 协调
Government officials visited the earthquake zone on Thursday morning to coordinate the relief effort.
政府官员星期四上午视察了地震灾区以协调救灾工作。
arbitrary
a. 任意的， 专断的 an arbitrary character 反复无常的性格 // an arbitrary decision 武断的决定
词根记忆
ar+bit(走)+r+ary(…的)→向各个方向走的→任意的
参考词汇
arbiter (n. 仲裁者)
horizontally
词根：horizon
adj.
horizontal 水平的；地平线的；同一阶层的
n.
horizontal 水平线，水平面；水平位置
horizon [天] 地平线；视野；眼界；范围
horizontality 水平状态
perspective
[U] a sensible way of judging and comparing situations so that you do not imagine that something is more serious than it really is 〔对事物的〕合理判断，正确认识
I think Viv’s lost all sense of perspective .
我认为维夫已不能明察事理。
The figures have to be put into perspective . 必须正确认识这些数字。
diagonal
Adj. a diagonal line is straight and joins two opposite corners of a flat shape, usually a square 对角的，对角线的
相关: horizontal ; vertical
Emit
ED: V-T If something emits heat, light, gas, or a smell, it produces it and sends it out by means of a physical or chemical process. 发出; 散发 (热、光、气体或气味)
The new device emits a powerful circular column of light.
这个新装置发出一束强烈的环形光柱。
Sphere 球体
Snapshot
1. N-COUNT A snapshot is a photograph that is taken quickly and casually. 快照
Let me take a snapshot of you guys, so friends back home can see you.
让我给你们大家拍张快照，这样家里的朋友们可以看到你们。
2. N-COUNT If something provides you with a snapshot of a place or situation, it gives you a brief idea of what that place or situation is like. 简况; 大致印象
The interviews present a remarkable snapshot of Britain in these dark days of recession.
这些访谈深刻地展现了英国在黑暗的经济大萧条时期的点滴情况。
Cone 圆锥
What happens at such events can neither affect nor be affected by what happens at P.
这些事件（包括它们的时空坐标）无法影响P点发生的事，也无法被其影响。
Cease
ED: V-I If something ceases, it stops happening or existing. 停止
Eg: At one o'clock the rain had ceased.
一点钟时雨已经停了。