衰减的

Results Based on the mean of air conduction hearing threshold of 500, 1000, 2000, 3000 Hz on audiogram, the ...

纯音测试以500Hz，1000Hz，2000Hz，3000 Hz的平均听阈表示，高性能战斗机飞行员改装体检时，推荐的听力标准为双耳平均听阈≤20～25dBHL，且咽鼓管功能正常和声反射衰减阴性。

The time-varying channel was modeled as an autoregressive process and a low-dimensional Kalman filter based on pilots was used to estimate the AR parameters,and the LS algorithm was adopted to track the time-varying channel fading factors.

采用AR过程对信道进行建模，利用基于导频的低维Kalman滤波算法进行信道估计，并采用LS算法估计时变的信道衰减因子。

The Averroism against which Albert the Great and especially Aquinas had fought so energetically did not disappear entirely with the condemnation of Paris (1277), but survived under a more or less attenuated form.

该averroism反对何俊仁的伟大，特别是阿奎那曾打了这麼大力没有消失，完全与谴责巴黎（ 1277 ），但存活下更多或更少的衰减形式。

Under given conditions, the shock wave is degraded into acoustic wave and the acoustic level of which depends directly on the weight of explosive charge in the blasting cap.

在一定条件下冲击波衰减成声波，声级的大小直接与爆炸的药量有关。

Experiments show that the method is easy to apply and can reconstruct both bremsstrahlung and characteristic spectra with only a few attenuation data.

实验表明，该方法可利用较少的衰减数据重建包含特征辐射的球管光谱，算法简单易行。

Based on Brune ω~2 source spectrum ,Hanks and McGuire deduced a simplified formula of RMS accelera- tion by stationary random vibration theory and Parseval theorem.

Hanks 和 McGuire 基于 Brune 的ω~2震源谱，借助平稳随机振动理论和 Parseval 定理给出了估计均方根加速度衰减关系的表达式。

For example, a second-order Butterworth filter (which is a critically damped

例如，一个二阶的巴特沃斯滤波器（它是一个没有尖峰的临界衰减

Elementary discussion on ventilation mode of the power house of hydropower station in river channel;2. According to the State Standard of Indoor Air Quality GB/T18883-2002,the air pollutants in the passenger car cabin were measured,and the influence of temperature,the type of car,the time since the manufacture date and the ventilation mode on the air quality was evaluated.

5倍；车内污染物的质量浓度随时间延长不断衰减，约10 d后趋于稳定；发动机运转时客车内污染物质量浓度升高，车内的空气质量变差；自然通风与循环通风均可使车内污染物质量浓度迅速下降，但自然通风方式效果更好。

There has a linear correlation between vertical jump height and bone density, bone strength of calcaneus.

运动年限在3年以上成年人的超声波衰减系数和跟骨骨质量指数高于运动年限在1年以下的成年人，差异存在显著性(P.05)。

With the rapid development of society and the economy, the grand canal's traditional

随着经济、社会的快速发展，大运河的传统运输功能已经衰减。

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％。