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- Low frequency ultrasonography 低频超声
- In electronics, undesirable low frequency currents interfering with a desired signal, and usually caused by a poorly screened alternating mains supply. 在电子学领域,一种不希望发生的低频电流,它干扰所要求的信号。通常这种现象是由于交流供电线路屏蔽不良引起的。
- The abnormal colours of seedlings turned a low frequency. 颜色异常的苗木出现频率较低。
- Laser direct writing of micro-OVD with low frequency templates[J]. 引用该论文 魏国军;周小红;周雷;陈林森.
- Objective:It is to evaluate the high frequency ultrasonography in diagnosis of acute mesenteric lymphadenitis. 目的:旨在探讨高频探头超声在急性肠系膜淋巴结炎中的诊断价值。
- Objective To investigate the value of high frequency ultrasonography in the diagnosis of cryptorchidism. 目的探讨高频超声对于隐睾症的诊断价值。
- Aim: To evaluate the diagnostic role of high frequency ultrasonography (HFU) and CDFI for breast tumor. 目的:探讨高频声像图与彩色多普勒血流显像(CDFI)对乳腺良恶性肿块的诊断价值。
- Objective To study the diagnostic value of high frequency ultrasonography for closed scrotal and testicular trauma. 摘要目的探讨高频超声对阴囊、睾丸损伤的诊断价值。
- If it is a low frequency sound, it is processed as an analog signal. 对低频声进行传统的处理。
- Objective To evaluate the value of high frequency ultrasonography in diagnosis of external humeral epicondylitis. 目的探讨高频超声对肱骨外上髁炎的诊断价值。
- The direction of the low frequency current with maximum frequency was also WSW. 低频流出现频率最多的方向和潮流基本一致。
- Medium SMES (200 MVA) are able to compensate some low frequency disturbance. 中型SMES(200MVA),这类SMES能补偿某些低频度的扰动
- Methods Thirty normal volunteers and seventy eight patients with external epicondylitis were examined with high frequency ultrasonography. 方法应用高频超声观察30例健康志愿者肱骨外上髁,在此基础上检查78例肱骨外上髁炎患者。
- This effect is obvious at lower frequency band. 这种效应在振动低频区段更为显著。
- Objective To evaluate the diagnostic role of high frequency ultrasonography(HFU) and CDFI for breast carcinoma of the old female. 目的:探讨老年乳腺癌的高频超声图像和彩色多普勒表现。
- Helmholtz resonator has a good noise eliminating performance at low frequency. 亥姆赫兹共振腔具有良好的低频消声性能,被广泛地应用于低频消声方面。
- Armstrong was forced to use avery low frequency barely above audibility. 当时这样的频率被认为是“高频”,但只不过是现在所用调幅波段的底部而已。
- Objective To evaluate the feature of high frequency ultrasonography (HFU) of different pathological type of breast cancer. 摘要目的探讨不同病理类型乳腺癌的高频超声(HFU)特点。
- Objective To evaluate the role of high frequency ultrasonography(HFU)and color Doppler flow imaging (CDFI) features in the diagnosis of breast cancer. 目的探讨乳腺癌的高频超声图像特征及彩色多普勒血流表现。
- Peak indicator light and LF (low frequency) switch per mono channel. 每路单声信道具有峰值指示灯及低频切除开关。