I - infrasound 中文 - EN166

infrasound n.亞聲，次聲，不可聽音。

infraspecific
At the present time earthquake forecast focus on various phenomena of earthquake such as seismic - electricity , geo - stress , electromagnetic wave , etc . earthquake forecast based on anomalous infrasound is one of important methods because of the good corresponding relationship between the anomalous infrasound and earthquake 短臨地震預報是世界性難題，由于對地震機理知之甚少，所以目前的地震預報著重于研究與地震有關的各種現象，諸如地應力、地電脈沖、電磁波、測震等等。由于次聲波異常與大地震有很好的對應關系，所以它是重要的臨震預報方法之一。
A brief introduction of fundamental and applied researches in the field of seismology engaged by the seismological division under knmi has been given in the paper , the researches are focused on infrasound , induced earthquakes , mining law and the projects in the european centre for exchange and coordination of seismological data ( orfeus ) hosted by the seismological division 摘要簡要介紹了荷蘭皇家氣象研究所( knmi )地震部所進行的地震領域的基礎和應用性研究，其中包括次聲研究、誘發地震研究、采礦法以及地震部所主持的歐洲地震數據交換和協調中心的工作。
This article summarizes the investigation on infrasound at home and abroad and introduces such issues about infrasound as the effects of infrasound on cardio - vascular system , nervous system , audition and vision , its application to medical device as well as its safe - threshold 摘要次聲是不可聽聲，綜合國內外的研究，介紹了次聲對動物心血管系統、神經系統、聽覺、視覺等的影響，及其在醫療器械中的應用，分析了次聲的閾值問題。
Firstly , a system was developed in functions to collect infrasound data , to transform analog voltage signal from detector into discrete signal by a / d card and to process the data by using methods of digital signal process 首先設計一套數據采集系統，次聲波信號通過傳感器被轉換成模擬電壓信號，通過a d板將其轉換為離散的數字序列，輸入計算機。利用數字信號處理的原理和方法對異常次聲信號進行分析處理。
But since infrasound in the air is known to travel much further then a mile and a half ( two kilometers ) , it ' s hard to be sure if elephants ever notice the seismic side of their calls or use them as a back up “ line “ on noisy days 但因為次聲在空氣中傳播的距離要遠大于兩公里，所以很難斷定大象是否留意到了地震波的信息，還是只是在地表嘈雜的日子把它作為一條備份“專線” 。
What is clear from the stanford team ' s earlier work with trained african elephants is that under ideal conditions , elephant infrasound calls can make seismic waves that can travel almost a mile and a half ( two kilometers ) 在通過馴服的非洲象進行的較早的研究中，斯坦福大學研究小組已清楚：理想條件下，大象的次聲吼叫能使震波傳播兩公里左右。
At present time , the infrasound method stays the stage of using recorders to record the infrasound wave continuously for 24 hours . automatically data acquisition and computerized analysis is not available 目前次聲波采用記錄儀連續24小時觀測記錄其波形，還未實現數據的自動采集，所以無法利用計算機對信號進行分析處理。
With the correlation technique , direction and speed of the infrasound can be calculated by computing the time delay of each detector and by using geometric knowledge 利用互相關技術，計算信號在不同傳感器上的時間延遲，再由平面幾何原理，得到波的方位和波速。
Furthermore , the above recording data limited to a single point is not valid to predict the epicenter . in this thesis , seismic infrasound is profoundly studied 本課題正是在以上的前提下，對臨震異常次聲進行更深一步的研究和探討。
Using the infrasound method to predict the initial time and scale of the earthquake is effective 利用次聲波異常信號預測發震時間及震級是十分有效的。
Change and significance of gfap in the brain of mice exposed to infrasound 不同聲壓級次聲作用小鼠后腦膠質纖維酸性蛋白的含量和意義
Infrasound monitoring system 次聲監測系統
Effects of infrasound on biological characteristics of osteoblast - like cells 次聲波對成骨樣細胞生物學特性的影響
Effect of infrasound on lung oxygemation and lung damage in rats 次聲對大鼠肺組織損傷及肺氧合功能的影響