无回声的

Contrast-enhanced Ultrasound(1) Renal occupied lesions: the contrast-enhanced imaging feature of renal cell carcinomas are multiformity. It was different in time of start-enhancing and start- expurgation and intensio.3 cases revealed wash-in contemporarily and 6 cases revealed wash- in quickly in time of start-enh ancing.In time of start-expurgating, 3 cases showed wash-out quickly, 3cases revealed wash-out contemporarily,3 cases showed wash-out slowly,6 cases revealed a higher contrast enhancement and 3 cases revealed a even contrast enhancement in enhancing intension; 4 cases with renal cyst s,outline had more clear and inside had no contrast media washing in and enhancing;3cases with renal angiomyolipomas washed in slowly,washed out slowly and equal or low enhanced ; 2cases with renal columnar hypertrophy were no outline appearance and the same enhancement and ech o as the nomal rena tissue.

超声造影诊断结果：(1)肾占位性病变：9例肾透明细胞癌，其超声造影表现多种多样，造影后肾脏恶性病灶造影开始增强的时间、开始廓清的时间及增强强度不等，在开始增强的时间方面，与正常肾皮质同时灌注增强的有3例，表现为快进的有6例，在开始廓清的时间方面，快退3例，同退3例，慢退3例，在增强的强度方面，6例病灶表现为高增强，3例为等增强表现；4例肾囊性病灶，超声造影轮廓较二维超声清晰，但内部始终未见增强；3例肾血管平滑肌脂肪瘤表现为慢进慢退，回声呈等、低增强表现；2例肾柱肥大超声造影无明显包块轮廓出现，造影增强的动态变化时间、强度与正常肾组织一致。

Objective: To compare two alternative ultrasound parameters, hepatic vein flow pattern and presence of focal hypoechoic areas within the liver hilus, as non-invasive predictors of liver steatosis in patients with chronic hepatitis C virus infection.

摘要目的：，比较两种不同的无创超声参数，即肝门内肝静脉血流模式和是否存在肝门局部低回声区，对预测慢性丙肝病毒感染患者的肝脏脂肪变性的效果。

It reninds one of the bronze bells dangling from a pagoda's eaves ; on windless days they are a decoration upon the age-weathered beauty, but with wind they give out wonderful thinkling and jingling metallic sounds,as if echoing age-old stories of long long ago...

就像古塔檐角下的铜铃，无风时，它们只是一种古色古香的装饰；一起风，他们便会发出奇妙的金属音响，似乎是许多古老故事的悠远回声。。。。。。

It reminds one of the bronze bells dangling from a pagoda''s eaves; on windless days they are a decoration upon the age-weathered beauty, but with wind they give out wonderful tinkling and jingling metallurgic sounds, as if echoing age-old stories of long, long ago Do you not think the same of silent people?

就像古塔檐角下的铜铃，无风时，它们只是一种古色古香的装饰，一起风，它们便会发出奇妙的金属音响，似乎是许多古老故事的悠远的回声……沉默的人们不也一样？

It reminds one of the bronze bells dangling from a pagoda's eaves; on windless days they are a decoration upon the age-weathered beauty, but with wind they give out wonderful tinkling and jingling metallurgic sounds, as if echoing age-old stories of long, long ago

就像古塔檐角下的铜铃，无风时，它们只是一种古色古香的装饰，一起风，它们便会发出奇妙的金属音响，似乎是许多古老故事的悠远的回声

It reminds one of the bronze bells dangling from a pagoda's eaves; onwindless days they are a decoration upon the age-weathered beauty, butwith wind they give out wonderful tinkling and jingling metallurgicsounds, as if echoing age-old stories of long, long ago...

就像古塔檐角下的铜铃，无风时，它们只是一种古色古香的装饰，一起风，它们便会发出奇妙的金属音响，似乎是许多古老故事的悠远的回声

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