查询词典 high frequency

Sustained AF could be induced easily in all dogs during vagal nerve stimulation in vivo both before and after isolation of all PVs with encircling lesions created by a bipolar radiofrequency ablation clamp device. PV elimination had no effect on atrial effective refractory period or its responses to cholinergic stimulation. Autonomic ganglia were identified by bradycardic and/or tachycardic responses to high-frequency subthreshold local stimulation. Ablation of the autonomic ganglia overlying all PV ostia suppressed the effective refractory period-abbreviating and AF-promoting effects of cervical vagal stimulation, whereas ablation of only left- or right-sided PV ostial ganglia failed to suppress AF.

无论是在双极环状消融所有PV之前或之后，在体刺激颈迷走神经节过程中持续性房颤在所有犬均能轻易被诱导出，PV切除对心房肌的有效不应期或对胆碱的反应均没有影响，通过对高频的域下刺激发生快速或慢速反应来鉴定自主神经节，消融叠加于PV口部的自主神经节能抑制有效不应期的缩短、和刺激颈迷走神经诱发的房颤促进作用，而仅消融左或右侧PV口部的自主神经节却不能抑制房颤。

Posamentier, and high frequency sequence stratigraphic framework was built base on seismic and drilling analysis, furthermore, cooperating the interpreted result of seism and drill to identity and divide sediment facies can recover paleogeomorphic and paleogeographic environment, and predict profitable oil trap.

本文在H.Posamentier高分辨层序地层学理论的指导下，分别从钻井、地震等方面对整个上区进行较为详细的层序地层分析，建立起高精度的层序地层格架。

Parasternal long axis and abdominal aorta long axis images were acquired by a 15MHz high-frequency linear ultrasound transducer at 4 weeks and 8 weeks after operation, respectively.

术后4周、8周采用飞利浦HDI5000超声诊断仪、15MHz：高频线阵探头，经胸骨旁左室长轴切面及腹主动脉的长轴切面进行检测。

Methods: Using high-frequency ultrasound mammary glands of 63 marri ed parous women (age range 22-67 years) who had the history of menstrual disten ding pain of the breast and who were noticed to hae breast nodes were examined and pathologically classified according the WHO standard.

用高频探头对年龄在22～ 67岁，有婚孕史，伴有或不伴有月经期乳腺胀痛，有乳腺结节的63例患者的乳腺进行检查，按世界卫生组织乳腺结构不良病理分型，分析乳腺异常声像图。

Methods: Using high-frequency ultrasound mammary glands of 63 marri ed parous women (age range 22-67 years) who had the history of menstrual disten ding pain of the breast and who were noticed to have breast nodes were examined and pathologically classified according the WHO standard.

用高频探头对年龄在22～ 67岁，有婚孕史，伴有或不伴有月经期乳腺胀痛，有乳腺结节的63例患者的乳腺进行检查，按世界卫生组织乳腺结构不良病理分型，分析乳腺异常声像图。

In chronic lymphocytic leukemia there is high frequency of loss of heterozygosity and mutation of atm gene, which related to pathopoiesis and progression of CLL.

慢性淋巴细胞白血病可出现高频率的atm基因杂合性缺失和核苷酸突变，并与其发病及侵袭性病程有关。

Four groups were respectively conducted in Morris water labyrinth test, which was used to dect the learning and memory of rats. Population spike in CA3 region was recorded in vivo following stimulation of lateral perforant path ,For the induction of LTP , 4 trains (50 shocks/ t rain , 500 Hz) high-frequency tetanic stimulations were applied to lateral perforant path.

MK-801组除按依赖组剂量注射海洛因外在每次注射海洛因前30分钟注射MK-801(0.3mg/kg)，四组各自进行水迷宫实验测试大鼠学习记忆；在体记录由刺激海马外侧穿通纤维(lateral perforant path，LPP)，所诱发的CA3区群体峰电位电位，并观察高频刺激引起的LTP效应；用逆转录聚合酶链反应技术半定量检测海马NMDA受体NR1、NR2A亚基mRNA的表达。

Objective: To explore the clinical value of high-frequency ultrasound in the diagnosis of perianal abscess.

R445.1A1005-2720-（2010）02-0063-02目的：探讨高频超声诊断肛周脓肿的临床价值。

For high-frequency words, the phonologically mediated priming effect was equal to the direct semantic priming effect.

结果发现，不论是高频词还是低频词语音中介启动对目标词的加工都有促进效应。

Resultsthe level cross-sectional area of the median nerve at the pisiform bone in the cts patients of the observation group was significantly higher than that of the normal control group and the flat rate of the observation group was significantly higher than that of the normal control group. the high-frequency ultrasound diagnostic sensitivity was 80.4%(lower than the sensitivity of the conventional electrophysiological examination),with painless,non-invasive characteristics of dynamic ultrasound imaging and lower cost.

结果 cts患者正中神经在豌豆骨水平截面积明显大于正常对照组；观察组的扁平率明显高于正常对照组；高频超声检查的诊断敏感度为80.4%，不及常规的电生理诊断敏感度；超声可以动态成像，无痛无创，费用较低。

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