韩国健身者练操震动大楼摇摆10分钟
<p>6日韩国首尔的电器电子商城<span word="Techno">Techno</span> <span word="Mart">Mart</span>突然上下震动10分钟左右，商城内数百人以为发生地震，紧急疏散。但专家经调查后认为，这次震动起因是大楼里有一个健身中心，参加健身项目的学员集体跳动引起震动。</p><p>韩国健身者练操震动大楼摇摆10分钟</p><p><span word="Photo">Photo</span> <span word="illustration">illustration</span> <span word="shows">shows</span> <span word="women">women</span> <span word="attending">attending</span> <span word="an">an</span> <span word="aerobic">aerobic</span> <span word="class">class</span>. <span word="South">South</span> <span word="Korean">Korean</span> <span word="experts">experts</span> <span word="said">said</span> <span word="Tuesday">Tuesday</span> <span word="they">they</span> <span word="believe">believe</span> <span word="a">a</span> <span word="vigorous">vigorous</span> <span word="gym">gym</span> <span word="exercise">exercise</span> <span word="session">session</span> <span word="caused">caused</span> <span word="a">a</span> <span word="high">high</span>-<span word="rise">rise</span> <span word="building">building</span> <span word="in">in</span> <span word="the">the</span> <span word="capital">capital</span> <span word="to">to</span> <span word="shake">shake</span> <span word="for">for</span> 10 <span word="minutes">minutes</span> <span word="this">this</span> <span word="month">month</span>, <span word="prompting">prompting</span> <span word="hundreds">hundreds</span> <span word="to">to</span> <span word="flee">flee</span> <span word="in">in</span> <span word="panic">panic</span>。</p><p><span word="South">South</span> <span word="Korean">Korean</span> <span word="experts">experts</span> <span word="said">said</span> <span word="Tuesday">Tuesday</span> <span word="they">they</span> <span word="believe">believe</span> <span word="a">a</span> <span word="vigorous">vigorous</span> <span word="gym">gym</span> <span word="exercise">exercise</span> <span word="session">session</span> <span word="caused">caused</span> <span word="a">a</span> <span word="high">high</span>-<span word="rise">rise</span> <span word="building">building</span> <span word="in">in</span> <span word="the">the</span> <span word="capital">capital</span> <span word="to">to</span> <span word="shake">shake</span> <span word="for">for</span> 10 <span word="minutes">minutes</span> <span word="this">this</span> <span word="month">month</span>, <span word="prompting">prompting</span> <span word="hundreds">hundreds</span> <span word="to">to</span> <span word="flee">flee</span> <span word="in">in</span> <span word="panic">panic</span>。</p><p><span word="They">They</span> <span word="said">said</span> <span word="tests">tests</span> <span word="showed">showed</span> <span word="that">that</span> <span word="oscillations">oscillations</span> <span word="created">created</span> <span word="by">by</span> <span word="a">a</span> <span word="group">group</span> <span word="of">of</span> <span word="Tae">Tae</span> <span word="Bo">Bo</span> <span word="practitioners">practitioners</span> <span word="on">on</span> <span word="the">the</span> 12<span word="th">th</span> <span word="floor">floor</span> <span word="of">of</span> <span word="the">the</span> 39-<span word="story">story</span> <span word="TechnoMart">TechnoMart</span> <span word="mall">mall</span> <span word="building">building</span> <span word="apparently">apparently</span> <span word="resonated">resonated</span> <span word="through">through</span> <span word="the">the</span> <span word="structure">structure</span>。</p><p><span word="Tae">Tae</span> <span word="Bo">Bo</span> <span word="is">is</span> <span word="an">an</span> <span word="aerobic">aerobic</span> <span word="exercise">exercise</span> <span word="routine">routine</span> <span word="that">that</span> <span word="involves">involves</span> <span word="performing">performing</span> <span word="the">the</span> <span word="motions">motions</span> <span word="of">of</span> <span word="boxing">boxing</span> <span word="and">and</span> <span word="martial">martial</span> <span word="arts">arts</span> <span word="such">such</span> <span word="as">as</span> <span word="Taekwondo">Taekwondo</span> <span word="at">at</span> <span word="a">a</span> <span word="rapid">rapid</span> <span word="pace">pace</span>。</p><p><span word="Professor">Professor</span> <span word="Chung">Chung</span> <span word="Lan">Lan</span> <span word="of">of</span> <span word="Danguk">Danguk</span> <span word="University">University</span> <span word="in">in</span> <span word="Yongin">Yongin</span> <span word="City">City</span> <span word="near">near</span> <span word="Seoul">Seoul</span> <span word="linked">linked</span> <span word="the">the</span> <span word="incident">incident</span> <span word="to">to</span> <span word="a">a</span> <span word="physics">physics</span> <span word="principle">principle</span> <span word="under">under</span> <span word="which">which</span> <span word="catastrophic">catastrophic</span> <span word="failures">failures</span> <span word="can">can</span> <span word="occur">occur</span> <span word="when">when</span> <span word="the">the</span> <span word="vibration">vibration</span> <span word="of">of</span> <span word="a">a</span> <span word="structure">structure</span> <span word="is">is</span> <span word="matched">matched</span> <span word="by">by</span> <span word="another">another</span> <span word="source">source</span>。</p><p><span word="He">He</span> <span word="told">told</span> <span word="a">a</span> <span word="radio">radio</span> <span word="programme">programme</span> <span word="that">that</span> <span word="the">the</span> <span word="building">building</span>, <span word="constructed">constructed</span> <span word="from">from</span> <span word="iron">iron</span> <span word="girders">girders</span> <span word="and">and</span> <span word="cement">cement</span>, <span word="had">had</span> <span word="a">a</span> <span word="characteristic">characteristic</span> <span word="vibration">vibration</span> <span word="frequency">frequency</span> <span word="which">which</span> <span word="was">was</span> "<span word="in">in</span> <span word="phase">phase</span>" <span word="with">with</span> <span word="the">the</span> <span word="synchronised">synchronised</span> <span word="movements">movements</span> <span word="of">of</span> <span word="the">the</span> <span word="Tae">Tae</span> <span word="Bo">Bo</span> <span word="practitioners">practitioners</span>。</p>
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