次声

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。

Any man of mine better be proud of me Even when I'm ugly he still better love me And I can be late for a date that's fine But he better be on time Any man of mine'll say it fits just right When last year's dress is just a little too tight And anything I do or say better be okay When I have a bad hair day And if I change my mind A million times I wanna hear him say Yeah, yeah, yeah, yeah, yeah I like it that way Any man of mine better walk the line Better show me a teasin' squeezin' pleasin' kinda time I need a man who knows, how the story goes He's gotta be a heartbeatin' fine treatin' Breathtakin' earthquakin' kind Any man of mine Well any man of mine better disagree When I say another woman's lookin' better than me And when I cook him dinner and I burn it black He better say, mmmm, I like it like that yeah And if I changed my mind A million times I wanna hear him say Yeah, yeah, yeah, yeah, yeah I like it that way Any man of mine better better walk the line Better show me a teasin' squeezin' pleasin' kinda time I need a man who knows, how the story goes He's gotta be a heartbeatin' fine treatin'Breathtakin' earthquakin' kind Any man of mine Let me hear you say yeah, yeah, yeah, yeah, yeah I like it that way Any man of mine better walk the line Better show me a teasin' squeezin' pleasin' kinda time I need a man who knows, how the story goes He's gotta be a heartbeatin' fine treatin'Breathtakin' earthquakin' kind Any man of mine You gotta shimmy shake Make the earth quake Kick, turn, stomp, stomp, then you jump Heel to toe, Do Si Do 'Til your boots wanna break Til your feet and your back ache Keep it movin''til you just can't take anymore Come on everybody on the floor A-one two, a-three four Hup two, hum This is what a woman wants

任何人为的矿井，最好以我为荣甚至当我一个丑陋的，他仍然好爱我我可以迟到一个日期，这很好但他最好的时间任何人为的mine'll说，它符合恰恰好当去年的着装只是有点过于紧凑而且什么问题，我还是说，最好好当我有一个坏头发日如果我改变主意 100万次；我想听听他的人都说是啊，是啊，是啊，是啊，是啊，我喜欢这种方式任何人为的煤矿更好地步行路线更好地展示我一个teasin ' squeezin ' pleasin '有点时间我需要一个人知道，如何传说他的宝贝，是一个heartbeatin '罚款treatin ' breathtakin ' earthquakin '样任何人为的矿井以及任何人的煤矿更好不赞同当我这样说，另一名女子的lookin '比我更当我对他煮晚餐，我烧黑他更说， mmmm ，我想这样说，是啊如果我改变了主意 100万次；我想听听他的人都说是啊，是啊，是啊，是啊，是啊，我喜欢这种方式任何人为的矿井更好更好的行走路线更好地展示我一个teasin ' squeezin ' pleasin '有点时间我需要一个人知道，如何传说他的宝贝，是一个heartbeatin '罚款treatin'breathtakin ' earthquakin '样任何人为的矿井让我听见你说，是啊，是啊，是啊，是啊，是啊，我喜欢这种方式任何人为的煤矿更好地步行路线更好地展示我一个teasin ' squeezin ' pleasin '有点时间我需要一个人知道，如何传说他的宝贝，是一个heartbeatin '罚款treatin'breathtakin ' earthquakin '样任何人为的矿井你一定摆动摇使地震踢，反过来，单，单，然后你跳转脚跟到脚趾，不思做童你的靴子想打破的TIL您的脚和你的背部酸痛保持movin '，' TIL的大家就不了等到大家都在地板上-一两，三四个石杉碱两种，哼声这是一个女人想要

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 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.

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 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.

当战争爆发时，希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希腊人注定会死。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。古希腊神话故事：阿瑞塞莎

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%。

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。

It was discovered from figuration that the syllables of a single calling song of male singings were "increasing".

从图B中发现雄鹤鸣唱单次鸣叫声的音节数&增多&，一方面是因为与雌鹤鸣唱声融合所至，另一方面是由于声音持续时间延长所至。

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。