次声

And the acoustical feedback of the secondary source is one of the key problems that affect noise reduction in ducts.

而次源声反馈问题一直是影响管道有源消声系统的关键问题之一。

By virtue of method of continuum approximate limit, we obtained the solitons of the vibration of lattice in one-dimensional harmonic and inharmonic chains of polarized molecule, under the conditions considering and inconsidering the interaction of exciton with phonon, through solving moving equations of exciton and phonon.

运用连续极限近似方法，通过求解声子和激子的运动方程，得到了在不考虑激子与声子的相互作用和考虑激子与声子相互作用两种情况下的极性分子简谐链和非简谐链中晶格振动的孤子解，并得出了激子与声子的相互作用的非线性效应类似于晶格三次势的非线性效应，以及相同的非线性效应不论是同时作用还是单独作用都具有相同的非线性效应的结论。

I promise , having the gift of the gab in the past but can't vomit any wording , I turn round, leave, there are the tears Sorry mother How of no use I am, will only let you worry about Remember you help me to think of the mathematics question at night, that is that I have already slept Remembering father that you look after the drinks are a wild boast, that is that you are very tired out Remember that you wash the bowl and wash the clothes and sweep the hygiene , you have neither enmity nor repentance You get up early more than I, sleep later than I, but let me sleep carefully You live frugally by oneself, but satisfy all of my ones that want I really ache very much Cardialgia Let me see to cry Want to wail heartily In the face of the blow coming head-on again and again I have already forgotten how to smile to face Please don't let me put on an air of cheerfulness Give me the time that a little agony suffocate I am too tired ------------------------- Pretend to be strong, the heart is disguised by the smile, hides fragily in the bed clothes, the tears are released , soak all, one touches the broken one sad Fools are all the same, not knowing how to escape being sad , because always there is a dream on the body

我一声答应，往日里的伶牙俐齿却吐不出任何字眼，我转身，走，泪已满面对不起啊妈妈我怎么那么没用，只会让你操心的记得你深夜帮我想数学题，那是我已沉睡记得你照顾喝的天花乱坠的爸爸，那是你很疲惫记得你洗碗洗衣服打扫卫生，你无怨无悔你比我早起，比我迟睡，却让我好好睡你自己省吃俭用，却满足我所有想要的我真的很痛心痛我想哭想放声大哭面对一次又一次迎面而来的打击我已经忘记了如何笑着面对请不要让我强颜欢笑给我一点痛苦窒息的时间我太累了-------------------------假装坚强，心被笑容伪装，脆弱在被褥里匿藏，泪释放，浸湿所有，一碰就破的悲伤傻瓜都一样，都不懂得逃避悲伤，因为总有梦想在身上谢谢了，如果翻译的好分我可以多加问题补充：在那个"想放声大哭"和"面对一次又一次迎面而来的打击"之间加一句："我真的已经尽了最大努力，可为什么还是做不到？！"

It is shown in this research that:① The acoustic emission phenomena of rock discontinuously occur under the effect of temperature.

试验研究表明：①随着温度升高，岩石的声发射现象是间断发生的；②花岗岩存在一个开始发生热破裂的门槛值温度，其值为120 ℃左右；③试验温度范围内花岗岩热破裂的声发射现象可分为5个阶段，即岩石原生裂隙整合阶段、热破裂前声发射静默阶段、热破裂声发射阶段、大规模热破裂后声发射静默阶段、二次热破裂开始阶段。

I had an operation to get rid of it and now I've having voice training to hopefully sort myself out because I think I push from a vocal folds which is why I got the cysts in the first place.

我做了一次囊肿切除手术，现在我正在进行发声训练，希望能解决自己的发声问题。我想，囊肿首先长在声襞上是因为我以前总用力推动声襞来发声。

The acoustical radiation power is expressed as a Hermitian quadratic form, while the radiation modes is determined by general eigenvalue decomposing, and then the radiation efficiency is computed via the orthodoxy of radiation modes with regards to impedance matrix and average velocity matrix; lastly, the validity of the method is proved by pulsating sphere and radiating cube with analytical results.

先将结构的声辐射功率表示为一个正定的厄米特二次型，运用广义特徵值分解求解了复杂结构的声辐射模态，然后利用声辐射模态关于阻抗矩阵与均方速度祸合矩阵的正交性，求解了复杂结构的声辐射效率，最后用具有解析解的脉动球与辐射立方体验证了该方法的有效性。

In unforeseen predictable reunion, we think that the Federation have been reunited, the Association Predestiny again, thinking that I am sorry to say, but never thought to wave goodbye every time, is likely goodbye; A Sigh, the world is likely to last The A Sigh.

在未可预知的重逢里，我们以为总会重逢，总会有缘再会，总以为有机会说一声对不起，却从没想过每一次挥手道别，都可能是诀别；一声叹息，都可能是人间最后的一声叹息。

A baby's first cry, his first look, first suck, first smile, first handshake, first word and first nod will all be a part of our lasting memories.

要知道，孩子的第一声哭，第一次睁开眼，第一次吮奶，第一次笑，第一次握东西，第一次呀呀叫，第一次抬头……都是我们心中永远的记忆。

It shows that, because of HOMW, the sound wave in expansion chamber is not in plane form; HOMW can decrease the capability of muffler; and the positions of inlet and outlet are important to the performance of mufflers.

结果表明，由于高次波的存在，消声器内部不一定是平面波；高次波对消声器性能有一定影响，能使某些频段的消声量下降，甚至失效；适当选择进出口管位置能抑制某几次高次波的出现，扩展消声器的有效频率。

My house today, then one year old baby, but 10 days before the emergence of a bit stream-ching nose, we began to think that an ordinary cold, cold medicine to give her to eat, but no improvement in the subsequent emergence of cough , a high fever complicated by eating foods that antipyretics on normal body temperature, and hold to the hospital to see doctors after hearing that there was a slight sound of the blisters, the latter according to an on-chip, the doctor said to be bronchial pneumonia, but my family has lost a second baby second fluid, and really do not want to give her a transfusion (before the 2nd is pneumonia), I decided to give her injections \ medication.

我家孩子今天才一岁，但前10天出现有点流清鼻涕，我们开始以为是普通的感冒，给她吃感冒药，但没有好转，后来出现咳嗽，并发了一次高烧，吃了退烧药体温就正常了，抱到医院去看，医生听后说有轻微的水泡声，后照了一个片，医生说是支气管肺炎，但我家孩子已经输了二次液了，实在不想再给她输液了(前2次也是肺炎)，我于是决定给她打针\吃药。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。