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- active low signal 低态有效信号
- Used in low signal and time constant circuits. 适用于低信号电路、时间常数电路。
- The reset inputs are active LOW and prevent triggering while active. 复位输入端是低电平有效并能防止在被触发。
- Hemangioma showed slightly low signal on T 1WI and high signal on T 2WI. 血管瘤T1WI呈略低信号 ,T2 WI呈高信号 ;
- MR showed low signal intensity on T?1WI and iso?signal intensity on T?2WI. MRI表现为SE序列T1加权低信号，T2加权等信号。
- This active low input is sampled simultaneously with the data during accesses on the memory bus. If asserted, a memory error will be generated. 在对内存总线访问的同时进行采样,当为低电平时,表示产生一个内存错误。
- CAN triggering synchronizes to the start of a CAN frame on any CAN high or CAN low signal. CAN触发可和任意CAN高或CAN低的帧起始位同步。
- Acutely (within hours of the ictus), the T1-weighted images usually demonstrate abnormally low signal; the T2-weighted images abnormally high signal. 急性期(发病数小时内),T1加权像显示异常低信号；T2加权像显示异常高信号。
- The autofocus algorithm not only need enough precision and computational efficiency, but also need fitting low signal to clutter rate (SCR). 自聚焦除了要有足够高的精度和高计算效率外，还要求能够适应信杂比较低的情况。
- In MRI group,7 cases exhibited low signal intensity with clear boundary on T_1WI and T_2WI. MRI组中,7例为T1WI、T2WI均呈低信号(与脊髓相比)边缘清;
- On MR imaging the tumors appeared as low signal intenrts on T1W1, slightly high on T2W1 (EPI) and markedly high on DWI. MR平扫呈长T1、长T2信号; EPI序列T2WI呈略高信号影;
- MR findings low signal zone at T_1-weighted image with a clear and smooth rim,high sig-nal zone at T_2-weighted image. MR 检查在 T_1加权像为低信号区,边界清楚而光滑,T_2像显示为高信号区。
- The tumors were low signal intensity on T2 WI, high signal intensity on T2 WI. There were necrosis in large masses. 肿瘤SE T1WI呈低信号，FSE T2WI为高信号，大的肿瘤内有坏死。
- The low signal on T1 WI was still low signal intensity on T2 WI which suggested calcification. T1加权像低信号区在T2加权像上随回波时间延长信号仍呈低信号而提示钙化。
- Raw thermal images acquired by pulsed thermography (PT) usually have low signal noise ratio (SNR) and temperature contrast. 摘要脉冲热像检测中直接获取的原始热像往往信噪比较低、对比度较差。
- Cerebrospinal fluid and putamen bursa all are behaved for low signal intensity, darkly is lubricious. 脑脊液及硬膜囊均表现为低信号强度，呈黑色。
- One case of hemangiopericytoma showed slightly low signal on T1WI and slightly high signal on T2WI. 血管外皮细胞瘤1例，T1WI上呈略低信号，T2WI上呈略高信号。
- This year, has not had former imposing and hurriedly, each kind of competition activity low key opened elects. 今年，没了以往的轰轰烈烈和风风火火，各种选秀活动低调地开选了。
- On T1WI the thickened pericardium displayed medium signal intensity in 20 cases and low signal intensity in 4 cases. 增厚的心包T1WI上20例呈中等信号，4例为低信号。
- MRI shows a heterogeneous suprasellar mass with low signal intensity relative to gray matter on T1WI and FLAIR. MRI显示鞍上不均一信号肿块，在T1WI和FLAIR图像上相对灰质呈低信号。
