次声的

The curve of third harmonic sound pressure level(SPL3)is alsoa "periodic function".The period length is about"first resonancefrequency" of the tube Δf=f0=c0/(2L).The magnitude of SPL3 canbe predicted by Coppens theory(with one of the parameters modified).

三次谐波声压级变化曲线为一"准周期"函数，周期长度为驻波管的第一共振频率值Δf＝f0＝C0/2L，用Coppens所推导的"共振"时公式，计算三次谐波共振峰的量值，表明仍存在差异，只有经过参数修正才能所得结果。

Every time it starts to get really good, every time it reaches a romantic or emotional high, the soundtrack chimes in and ruins the scene with invariably intrusively and often downright awful songs, many of which sound like the producers dug up John Denver and forced an acoustic guitar into his decaying hands.

每一次开始获得真正好的，每一次达到一个浪漫的或情绪高，原声带在编钟和废墟现场，与总是intrusively ，而且往往简直是可怕的歌曲，其中有许多听起来像是生产者挖约翰丹佛和被迫一原声吉他到他腐烂的手中。

Protesilaus, greek chief, a seeing that there was a gooddeal of hesitation among his comrades,leapt overboard and fellinstantly, pierced through by hector\'\'s spear .when his wife laodamia heard of this she was simply inconsolable .she offered rich sacrifice to the gods and begged zeus to restore herslaughtered lord to her.moved by her fidelity ,zeus sent hermes to escort the shade of protesilaus back to the upper air tostay with his wife for three hours.laodamia\'\'s joy knew nobounds when she held her slain lord once more in her arms.protesilaus told her the story of his selfsacrifice , and laodamiawas happy to become a bride for a second time.however,shegave a sharp cry when she saw hermes coming at the fixed hourto take protesilaus back to the lower world.so sad was she at the second parting that she died of grief not long after.the pairwere reunited in hades.

他的妻子拉俄达弥亚听到这个消息，悲痛之心无法得以慰藉。她献给众神丰厚的祭品，哀求宙斯把被杀的丈夫还给她。她的忠贞感动了宙斯。宙斯派海默斯护送普洛忒西拉斯的幽魂回到阳间与他的妻子共度三个小时。她再次拥抱被杀的丈夫。她的喜悦无边无际。普洛忒西拉斯给她讲述了他自我献身的故事。拉俄达弥亚很高兴再做一次新娘。然而，当海默斯预定的时间到来时，普洛忒西拉斯将被带回阴间，她痛苦地叫了一声。对于第二次分别她如此悲痛不堪，以致于不久之后就在痛苦之中死去。他们在冥府之中再次团圆。

Laodamia when the greek ships reached the trojan land at the outbreak of the war,a prophet declared that the first greek setting foot on the enemy soil was doomed to die .protesilaus ,a greek chief ,seeing that there was a gooddeal of hesitation among his comrades ,leapt overboard and fellinstantly ,pierced through by hector''s spear .when his wife laodamia heard of this she was simply inconsolable .she offered rich sacrifice to the gods and begged zeus to restore herslaughtered lord to her.moved by her fidelity ,zeus sent hermes to escort the shade of protesilaus back to the upper air tostay with his wife for three hours.laodamia''s joy knew nobounds when she held her slain lord once more in her arms.protesilaus told her the story of his selfsacrifice ,and laodamiawas happy to become a bride for a second time.however ,shegave a sharp cry when she saw hermes coming at the fixed hourto take protesilaus back to the lower world.so sad was she at the second parting that she died of grief not long after.the pairwere reunited in hades.

拉俄达弥亚当战争爆发时，段腊般抵达特洛伊地区。一位预言家宣称，第一个踏上敌人土地的段腊人注定会死。一位名叫普洛忒西拉斯的希腊酋长看着同伴踌躇不前，就从船上跳入水中，一瞬时他就倒下了，被海克特的长矛穿透了胸膛。他的妻子拉俄达弥亚听到这个消息，悲痛之心无法得以慰藉。她献给众神丰厚的祭品，哀求宙斯把被杀的丈夫还给她。她的忠贞感动了宙斯。宙斯派海默斯护送普洛忒西拉斯的幽魂回到阳间与他的妻子共度三个小时。她再次拥抱被杀的丈夫。她的喜悦无边无际。普洛忒西拉斯给她讲述了他自我献身的故事。拉俄达弥亚很高兴再做一次新娘。然而，当海默斯预定的时间到来时，普洛忒西拉斯将被带回阴间，她痛苦地叫了一声。对于第二次分别她如此悲痛不堪，以致于不久之后就在痛苦之中死去。他们在冥府之中再次团圆。

When the peak-to-peak drive voltage of the transducer is 120 V,average of the results obtained using the proposed method and the radiation force method are 5.09 W and 6.06 W,respectively,with a difference of 16%.

测量结果表明，在换能器两端电压峰峰值为120V时，用本方法重复10次测得声功率的平均值为5.09W，相应的用辐射力法测得声功率的平均值为6.06W，两者相差16%。

Wong figured the mutated gene might make an ideal target for a vaccine, as it creates an abnormal protein not seen in healthy cells. He hooked up a fragment of the mutant protein to a larger protein from a giant sea snail that looks foreign and can rev up the immune system.

使她第11次决定戒烟的，是一次从美国北部演讲回家时，中途因遇到大雪，滞留时间较长，百无聊赖时，就抽了两支香烟，回家后竟生起病来，喉咙沙哑，发不出声，这下子可把她吓坏了。

People thinking about the origin of language for the first time usually arrive at the conclusion that it developed gradually as a system of grunts , hisses and cries and must have been a very simple affair in the beginning .

第一次思考语言起源的人，往往会得出这样一个结论：语言最初是由诸如咕噜声、嘶嘶声和叫喊声等简单事情逐渐发展起来的。

Still the Indian Summer held on, and he continued to crawl and faint, turn and turn about; and ever the sick wolf coughed and wheezed at his heels.

幸好深秋的天气依旧晴朗，他又继续爬，一次又一次地晕死过去，可一醒来他又继续地往前爬，不停地回头张望着；而那头病狼也在不停地咳嗽着，发出艰难的喘息声，可依然紧紧地尾随其后。

Still the indian summer held on, and he continued to crawl and faint ,turn and turn about; and ever the sick wolf coughed and wheezed at his heels.

幸好深秋的天气依然晴朗，他继续爬，一次又一次地晕死过去，可是醒来他又继续地往前爬，不停地回头张望着；而那头病狼也在不停地咳嗽着，发出艰难的喘息声，可依然紧紧尾随其后。

You'll probably have to move the bell and the cauldrons a few times before it's over.

当然，声音响一次是不够的，多敲几次吧。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。