主动脉的

Especially in pain-free dissections diagnosis can be difficult and delayed.

尤其是无痛型的主动脉夹层，其诊断往往比较困难且容易延误病情。

Aortic dissections might be missed in patients with neurological symptoms but without pain.

有NS症状而无疼痛的主动脉夹层患者容易漏诊。

Methods: The clinical data of 25 patients with complicated aortic dissections were analysed retrospectively. Results: The patients′ ages ranged from 31-72 years with a mean of 50.2 years.

对25例复杂型主动脉夹层行腔内血管外科治疗患者的临床资料进行回顾性研究。

Objective To evaluate the value of transthoracic echocardiography and transesophageal echocardiography in diagnosing aortic dissections and compare them with ultrafast computed tomography and magnetic resonance imaging.

目的 探讨经胸超声心动图、经食管超声心动图对主动脉夹层的诊断价值，并与磁共振影像、超高速CT等影像诊断进行比较。

Objective To explore the value of threedimensional angiography withmultislice spiral CT on Thoracic aortic disease.

摘 要］目的：探讨胸主动脉多排螺旋CT血管三维成像（MSCTA3D）的价值。

Methods Thoracic aorta of Wistar rat is obtained, by using a specially made crochet hook, the aorta is over turned, then ligated the two ends, the vascular endothelial cells are wiped off with 0.1% collagen Ⅰ enzyme for 15 minutes.

将大鼠主动脉翻转，两端结扎，用0.1%胶原酶消化血管内皮细胞，剩余血管剪成小块均匀种植于培养瓶底，加入DMEM培养液培养，观察血管平滑肌细胞的生长。

Objective To investigate the expression of melusin/Akt signal pathway in aortic valve stenosis patients.

目的 研究melusin/Akt基因信号途径在主动脉瓣狭窄患者中的表达。

However, aortic stenosis is still quite common on the wards of our hospitals.

但是，主动脉狭窄在我们医院的病房中仍然很常见。

If this happens, a second balloon procedure or operation may be necessary to repair aortic stenosis.

如果发生了，再次球囊导管介入或手术对于修复主动脉狭窄可能是必要的。

Results: 4 patients died and all the others recovered satisfactorily. No residual fistula or new occurrence of aortic insufficiency was found.

结果：死亡4例，存活205例效果满意，无残余瘘和新的主动脉瓣关闭不全发生。

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