查询词典 Signal-to-Noise

Typical MR findings of acute apicitis include low T1 signal and high T2 signal with rim enhancement.

急性岩尖炎典型的MR表现包括T1低信号、T2高信号，并环状强化。

After sampling and avoidance learning, herbivores can discriminate this signal and associate it with unpleasant experiences, so aposematic coloration comes into being between plant-animal interaction. The theory of aposematic coloration has not been accepted in plants while it has been adequately discussed for a long time in animal kingdom until Hamilton's signal theory about autumn colours was published.

颜色作为一种稳定有效的视觉信号通常是花和果实的诱惑信号，某些情况下也是一种警戒防御信号，植食动物经过抽样学习后能识别这种防御信号并主动回避，从而形成了植物的警戒色。

Based on the former, I make scientific researches on some representative technologies in weak signal detection, such as Multi-point signal averager, Relative apparatus, Lock-in amplifier, and so on. I comprehend their theories and measure respective performance parameters.

基于前者，笔者对微弱信号检测中的几种极具代表性的仪器进行了探索研究，如多点信号平均器、相关器、锁定放大器等，了解它们各自的原理，并分别测定了其性能参数。

This article separated the vocal melody signals from MP3 songs audio signals based on frequency domain convolutive signal blind source algorithm, and then built a song database of humming retrieval system using song melody features extracted from the vocal melody signal.

将通过频域卷积信号盲源分离算法从MP3歌曲音频信号中分离出人声主唱信号，再从人声主唱信号中提取出能够表征歌曲的旋律特征构建哼唱检索系统的歌曲数据库。

Digital Signal Processing Module, including convolve, deconvolve, correlate, Signal Generator, Hartley Transform, Fourier Transform, Windows Function, Finite and Infinite Impulse Response Filter.

通用软件平台主要由六类软件开发包来实现，包括： 1。数字信号处理软件包：负责基础的数据处理，针对仪器所分析的信号从单独离散量，到一维谱图、二维图像及动态分析系统的多维数据等，提供信号生成、时域处理、频域处理、窗函数和滤波器设计等功能函数。

Of the other 16 patients with ALS whose upper motor neurone signs were not so manifest (cases 6-21), high signal was seen in the corticospinal tract on T2-weighted images was seen in 11 (cases 6-12, 16-18 and 21); five (cases 6, 7, 11, 12 and 16) of these also showed high signal on the PD-weighted images.

另外16例ALS患者（病例6~21）上运动神经元症状体征不明显，在T2像上有11例可见皮质脊髓束高信号病灶（病例6~12、16~18、21）；在PdWI像上有5例也可见高信号病灶（病例6、7、11、12、16）。

In the present study, high signal in the corticospinal tract on T2-(16 of 21) and PD-(10 of 21) weighted images and low signal in the motor cortex on T2 weighted images (12 of 21) were seen frequently in patients with ALS.

在此研究中，ALS患者在T2像上、PdWI像上于脑部皮质脊髓束走行区常可见高信号病灶，在T2像上于运动皮质区常可见低信号病灶。

The original electrical signal in the Cucumis sativus is a faint low-frequency and random electrical signal.

一般说来，这种电波信号是植物对环境刺激或环境变化的反应。

Two cases were isointense or hypointense signal on T1WI and heterogeneous hyperintense signal on T2WI and T2WI STIR. Conclusion Enhanced CT clearly showed calcification and blood supply of the tumor while MRI showed small hemorrhage, cystis foci, necrosis and central stellate scar of the tumor. MRI can provide more useful information in detecting chromophobe cell renal carcinoma.

结论肾脏嫌色细胞癌属少血供肿瘤，CT能清晰显示肿瘤内钙化灶和血供情况，而MRI容易检出肿瘤内小出血灶、囊变坏死灶以及中央星状瘢痕，可对肾脏嫌色细胞癌的诊断提供更多更有价值的信息。

Quorum sensing is an environmental-signal-sensing system in bacteria. It is relies upon the interaction of a diffusible signal molecule with cell population density.

群体感应是细菌检测自身群体密度大小的环境信号感受系统，在细菌细胞间信息交流中具有极其重要的作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。