标签:振动 相关文章
第二章元音 元音又称母音。所有元音的发音都需要张嘴振动声带。几乎所有的英文字都含有元音,因此我们可以说元音是构成英文字发音的基本元素。元音一共有下列 24 个 : (i) (I) (e) (E) (A)
Now, coumarin is a very common thing, a material, in fragrance which is derived from a bean that comes from South America. 香豆素是香水中一个十分平常的原料,从来自南美的豆子中提炼出来的。 And it is the classic syntheti
And...but...but...we have to go a little beyond that. 我们需要进一步深入。 Now let me explain why vibrational theory has some sort of interest in it. 现在我来解释为什么震动理论有一定的道理。 These molecules, as you saw i
However, I managed to get a hold of a Borane eventually, and here is the beast. 无论如何,我最终得到了一些硼烷,这就是那个怪物。 And it really does have the same -- if you calculate, if you measure the vibrational frequencies,
This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Used to be if spies wanted to eavesdrop, they planted a bug. These days, it's much easier. Because we all carry potential bugs in our pocketssmartphones. One t
Exercise 7-2: Targeting The TH Sound In order to target the TH sound, first, hold a mirror in front of you and read our familiar paragraph silently, moving only your tongue. It should be visible in the mirror each time you come to a TH. Second, find
The universe is a pretty big place. The funny thing is each of us who live here occupy our own little world. Take the case of Tip, an ordinary girl with a mom who loves her and a cat named Pig. Now she never imagine that a million miles away was a lo
分集介绍:这一讲首先深入讲解了二阶常系数齐次线性常微分方程y''+Ay'+By=0的解如何在实解和复解之间进行转换。然后将方程化为具有物理意义的形式的振动方程y''+2py'+y=0,分别讨论了无阻尼
unit 555 修车闸 dialogue 英语情景对话 A:Can I help you? A:你好,要帮忙么? B:Yes, my breaks are not working well. B:是的,我的车刹车不太好。 A:What's wrong with them? A:怎么了? B:I hear a noise and feel vibrations wh
What Michelson and Morley did, without actually intending to, was undermine a longstanding belief in something called the luminiferous ether, 迈克尔逊和莫雷所做的实际上是在无意之中所做的破坏了长期以来人们对一种所谓光
第一,下定决心的原则 学习语言首先要下定这样的决心:无论如何要用一年时间学会英语!有了决心才能取得成功。如果没有决心就只会受到挫折,无法取得好的成绩。 这件事发生在我在北京
Science and technology 科学技术 Channelling heat 导热 Good conduct 优质传导 It may soon be possible to control heat flows with great precision 可能很快人们就有可能如臂使指地控制热量流动了 HEAT, as every schoolboy knows
Many of us have reached in our pockets, feeling a vibration, wrongly believing our mobile phones have just rung. 许多人都曾有过这样的错觉:觉得手机在振动,于是去口袋拿手机,结果手机根本没响。 The phenomenon even
释义: have somebody ( sth ) 使处于某种状态 have somebody ( something ) 后面如果接形容词或介词的话会表示使处于某种状态。 have one's hand full 表示很忙,have the phone on vibrate 表示把手机置于振动。 例句
破擦音[dz] 发音要领: [dz]是清辅音一一舌位:发音时舌前端抵住上齿龈,气流从缝隙中缓缓冲出;唇形:自然张开;声带:振动。 技巧提示: [dz]的发音与汉字资的音相近,发[dz]时可参考资发
破擦音[ts] 发音要领: [ts]是浊辅音一一舌位:发音时舌前端抵住上齿龈,气流从缝隙中缓缓冲出;唇形:自然张开;声带:不振动。 技巧提示: [ts]与汉语拼音ci在发音上有相似之处,但发ci时
破擦音[tr] 发音要领: [tr]是清辅音一一舌位:先做好发[t]的口形准备,然后将舌尖轻抵在上齿龈上发[t]音,并迅速将舌尖滑到[r]的部位上;声带:不振动。 技巧提示: [tr]的发音与汉语拼音ch
舌边音[l] 发音要领: [l]是浊辅音、齿龈音,可以分为清晰舌边音(出现在元音之前)和含糊舌边音(出现在辅音前或词尾)。发清晰舌边音时舌尖及舌端紧贴上齿龈,舌前部向硬腭抬起,气流从舌的
摩擦音[] 发音要领: []是浊辅音、舌齿摩擦音一一舌位:舌头放在略微张开的上下齿之间,并略微接触。舌尖尽量向下齿用力。气流通过舌尖和上下齿尖的缝隙发生摩擦而发音。唇形:两唇之间的
释义: be set to 设定为,为 set 最基本的含义为设定,确定等,其被动形式 be set to+动词表示设定为,确定为等。 例句: She's set to receive it when she turns twenty-five. 如果她到了 25 岁,就可以得到这