回声

Methods morphology ,opening,closing and hemodynamicon short axes section of large arteries and on long axessection of aorta were observed.results thickening,calcification ,hemodynamic,morphologic changes of the aortic wall were exacerated with increased age of patients.conclusion cdfi is of great valve in diagnosing bicuspid aortic valve.

重点通过大动脉短轴及主动脉长轴等切面观察二叶式主动脉瓣的形态、回声、启闭及血流动力学情况。结果：随着年龄的增长，瓣膜增厚、钙化、血液动力学、心脏形态学改变逐渐加重。结论：彩超对先天性二叶式主动脉瓣畸形及病变的诊断具有重要意义。

Scientists used these echoes to determine that Brahe witnessed a type Ia supernova .

科学家们利用这些"回声"确定布雷赫看到的是一颗 Ia 超新星。

Scientists used these echoes to determine that Brahe witnessed a type Ia supernova.

科学家们利用这些回声确定布拉赫看到的是一种la--型超新星。

Barn and field echo the nickname given to the valley during the Civil War—Breadbasket of the Confederacy.

谷仓和田地回声的昵称给山谷在内战中，粮仓的邦联。

The Quartet's recordings, too, are consistently well received: for example, its 2002 release of Britten's Quartets Nos.

四方的录音，也始终深受：例如，2002年发布的布里顿的四重奏第2和第3赢得了2003年古典回声奖。

Buran days a quiet and somewhat noisy city This winter I was walking home one Asked myself accustomed to? You did not echo every night to become a good Is there any good way to a more obedient lonely You also recently okay Is not also miss in the struggle You said you would remember that I still remember that? You also recently okay You tired? Busy heart still hurt? If I forget a last resort Happy to proceed soon There have been no more worried about the rights of expression Old Valentine's greetings to strangers also embarrassing than Yesterday far tomorrow is still long but great memories fuzzy This night is not how to shed tears

"天有点冷风有点大城市宁静而喧哗这一个冬天我得一个人走回家问自己习惯了吗没有你每到夜里回声变得好大有没有什麽好方法让寂寞更听话你最近还好吗是不是也在思念里挣扎你说会记得我还记得吗你最近还好吗忙碌吗累吗心还会痛吗如果真不得已忘了我快向快乐出发有再多的牵挂都已没有权利表达旧情人给的问候比陌生人还尴尬昨天远了明天还长回忆模糊但巨大这样的深夜眼泪要怎样不流下"万分感激！！

Additionally, adjacent to the dependent portion of the bony calvarium is an echogenic interface thought to represent the fetal subarachnoid space that may be misinterpreted as the lateral ventricular wall, causing further confusion.

蛛网膜下腔的强回声界面可以被误认为侧脑室的外侧壁。弯箭头，透明隔腔；空心箭头，大脑外沟池。

The enhancement pattern of 6 liver metastasis was diverse,including peripheral or entire degree enhancement in the arterial or portal phase with slow or fast wash-out. The 6 cases of hemangioma were enhanced centripetally in portal phase and washed out after several minutes and the other 2 nodule cases with entire enhancement.

结果］14例原发肝癌中10例呈典型表现，为"快进快出"。6例肝转移癌表现多样，动脉期可呈环形或整体增强，肝恶性肿瘤的消退时间早于其他肝脏局灶性病变（P＜0.05），门脉期或延迟期表现为相对低回声。6例肝血管瘤有其特有征象动脉期开始缓慢向心性结节环形增，持续数分钟后才消退。

A Chelyabinsk resident, Vladimir Zonov, told Echo of Moscow radio that the plane had crashed into a field of wheat and that smouldering debris from the wreckage was scattered up to 300m from the site.

车里雅宾斯克居民Vladimir Zonov在接受回声报采访时说，飞机坠毁在麦田中，燃烧产生的浓烟弥漫了周围方圆300米的地区。

The sound echoed off the concrete, like the chirr of locusts on a summer night.

它发出的声音碰到水泥地面而发出回声，如同夏天夜晚蝗虫的唧唧声。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐