查询词典 Signal-to-Noise

Some of them with visual loss, optic papilledema and orbital mass. B-scan ultrasonography revealed a cyctic tumor and a strong echo spot with spontaneous movement. On CT scanning, found was a well-defined hyperdensity mass in which there was a low density area. On MRI, the signal intensity of T1WI of cystic fluid was low or moderate and of T2WI was high, while the signal intensity of T1WI and T2WI of surounding scar tissue was still low.

结果 22例有反复的眶内炎症史及占位性病变体征，如眼睑及结膜充血水肿，眼球突出，眼球运动受限；6例有视力下降和视乳头水肿，并扪及肿物。B超示占位性病变内有液性暗区及自发运动光斑；CT扫描示高密度块影中央部有低密度区；MRI检查示囊液信号强度T1WI为低或中信号，T2WI为高信号，其周围的纤维瘢痕组织T1WI和T2WI均为低信号。

Orbit train detection, train orbit before the signal, information processing system will be collected signal processing, the corresponding train sentence parking orbit.

详细说明：列车入轨检测，列车入轨前发出信号，信息处理系统将采集信号处理，判决列车进入相应轨道停车。

A simplified signal model of digitalized receiver and the signal model of interference, such as tone interference, autoregressive interference and digital interference, are provided. And it is analyzed in detail the capability of DSSS communication systems in suppressing broadband Gaussian interference, single tone interference and partial band interference.

给出简化的接收机信号模型和常用的窄带干扰模型(音调干扰、AR干扰、低速数字干扰等)，分析了DSSS技术对阻塞高斯干扰、单音干扰、部分频带干扰等的抑制性能。

A new signal peptidase recognition site has been found in the linker-encoded amino acid sequence.The change in length of the signal peptide might someshow increase the secretion efficiency or the synthesis of M.bla

由DNA顺序推知，linker区编码的氨基酸顺序SerGlnAlaGys可能是新的信号肽酶识别位点；信号肽长度的变化可能以某种方式影响蛋白质的分泌量。

Intermediate signal was observed in fibroblasts of tendon, periosteum and perichondrium. Weak signal occured in early chick embryos.

在同位素和非同位素原位杂交建立后，我们着手建立了双标记原位杂交方法。

Three new methods are provided, which are demodulation by means of envelop periodogram, multi-path signal and vector signal.

提出了包络周期图法、利用多途信号方法和利用矢量信号方法。

The large signal and small signal SPICE circuit models of HBT and high-frequency model of PIN photodetector have been constructed.

建立了HBT的大信号与小信号SPICE电路模型以及PIN探测器的高频模型。

Data acquisition ; photoionization signal ; signal detection ; AT89C52

数据采集；光离子化信号；信号检测； AT89C52

The Polynomial Wigner-Ville Distribution is a time-frequency signal analysis tool for representing Polynomial Phase Signal.

多项式Wigner-Ville分布是分析多项式相位信号时频特性的一种有力工具。

Based on parametric model of signal-multicomponent polynomial phase signal,a novel time frequency kernel is presented.

立足于信号的参数化模型—多分量多项式相位信号，提出了一种新的时频分布并给出了其构造方法。

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％。