衰减

Most researchers focused on similar studies and got measured data through free decay oscillation tests before.

在以往少数垂荡板的试验研究中，人们主要采用自由衰减试验来获得所需数据，然后再进行分析。

Moreover, using two-dimension model, the vibration attenuation law of free field in thick-layered soft soil is analyzed, and the soil scopes requiring consider by various limit criterions is obtained for building.

利用二维模型分析了厚层软土情况地铁环境振动的自由场衰减规律，得出建筑在不同振动限值标准情况下需要考虑振动影响的范围。

The peak time detecting circuit which is composed of full-wave rectification circuit and differential circuit can detect the reach time of echo signal accurately.

采用时间增益补偿技术，补偿超声波在空气中的衰减，减少回波信号的起伏；由有源全波整流电路和微分电路等组成峰值时间检测电路，可正确检测回波的峰值到达时间。

The results indicated that the higher the gastightness in the stacks was,the longer the pressure decay and maintaining time of fumigant were.

以压力衰减法测定两个相似的薄膜密封包装玉米垛的气密性、采用PH3和CO2 混合熏蒸后PH3和CO2 气体浓度在粮垛内的保持情况以及对玉米象、米象和赤拟谷盗 3种害虫处理后的结果。

Key words : revetment works ; inverted siphon ; local scour ; gabion ; decay model

关键 词：裹头工程；倒虹吸；局部冲刷；铅丝石笼；衰减模式

This research was conducted to use Gamma ray attenuation method to measure sediment concentration and to use water level change rate to determine flow rate.

本研究利用γ射线衰减原理测量含沙量、采用水位随时间的变化测定流量。

Meanwhile, the newly real particles decay, giving off light, X-rays and gamma rays.

同时新生的真实粒子衰减，发出光、X射线和伽马射线。

Discover in analysis of a case of a physically strong patient running a high fever or suffering from such disorders as stasis of blood:(1) knowledge spills over to be concerned with intellectual gap not only, and the area demand that decides with geographical feature is concerned.

在实证分析中发现：(1)知识溢出不仅与知识缺口有关，而且与地理特征决定的区域需求有关。(2)类似许多经济地理现象，溢出强度的空间衰减是指数的。

Therefore, noise reduction is a necessary part of video processing. Spatial filter and temporal filter were proposed to reduce noise in video in previous works. Both of them have disadvantages such as ghost effect of spatial filtering and blurring in temporal filtering.

以往的滤波器若只考虑利用空间域上的资讯做杂讯衰减，会有残影的情况发生；若只考虑利用时间域上讯号间的相关性来滤除杂讯，则无法消除短暂突发性的杂讯。

With the help of energy density, we get the global existence of smooth peoriodic solutions, and their large time behavior.

对更加复杂的非等熵情形，利用能量密度，得到了其周期光滑解的整体存在性和指数衰减性。

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％。