In recent years, the research of microseism has made some progress in civil engineering realm.
近年来，地脉动的研究在土木工程领域也取得了一些进展。
This paper emphasize in study of mechanism of vibration frequency for free site in microseism testing.
本文的着重于地脉动测试自由场地自振频率的机理研究。
Random noises have uniform rules and they comprise of circumstance noise, measurement error and ground microseism.
而随机噪声没有统一的规律，它包括环境噪声、测量误差、地面微震等。
The technology of real-time microseism monitoring in the operation-involved area of oil field is an interesting research topic.
油田生产波及区的微地震法实时监测是目前国内外方兴未艾的研究课题。
Microseism, as a kind of regional monitoring means, is used to predict and forecast the great dynamic force calamity of the mine.
微震作为预测预报矿井重大动力灾害的一种区域性的监测手段，同时具有谱成分丰富、频带较宽的特性。
Studied the shock bump caused by the key stratum movement in Huafeng Colliery using the microseism locating and monitoring technology.
采用微地震定位监测技术对华丰煤矿关键层运动诱发矿震进行了研究。
The application of microseism controlled blasting technique during construction, as well as the construction technique of the resin tensile anchor bolts, are introduced also.
本文介绍了地下大跨岩石隧洞于山溜冰场的施工步骤 ，微振动控制爆破技术在施工中的应用 ，以及树脂张拉锚杆的施工等技术。
On this basis, from the enterprise microseism bedding plane, it develops and gives the synthetically study frame about resource, ability, surround environment and compete superiority.
在此基础上，从企业的微观层面，推演给出资源、能力、外部环境、竞争优势整合研究框架。
High frequency vibrations did occur early in the microseism, and then the frequency was attenuated because of the damping of rock but not by the frequency dispersion of surface waves.
微地震过程中，先产生频率较高的振动，由于岩体阻尼而非面波频散引起振动频率衰减。
Theoretical analysis and experimental results show that the method has the effect as same as Hall sensor in the event that ensure the DC motor start-up quickly and microseism, and no locked rotor.
理论分析和实验表明：提出的方法与霍尔传感器一样能保证无刷直流电机快速大转矩、小抖动、无堵转的平滑启动。
Theoretical analysis and experimental results show that the method has the effect as same as Hall sensor in the event that ensure the DC motor start-up quickly and microseism, and no locked rotor.
理论分析和实验表明：提出的方法与霍尔传感器一样能保证无刷直流电机快速大转矩、小抖动、无堵转的平滑启动。
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