The ancient collapse is a familiar ill geologic phenomenon in karst region, usually it is unsuitable for direct ground bearing stratum.
古塌陷是岩溶地区的一种常见的不良地质现象，一般不宜作为建筑物地基直接持力层。
Non-ground neutral system and arc-suppression-coil-ground neutral system are called non-direct ground neutral system that is widely used in power distribution system.
中性点不接地系统和中性点经消弧线圈接地系统统称为中性点不直接接地系统，广泛应用于铁路配电系统中。
The direct ground contact protects the Juggernaut from electromagnetic attacks and shield discharges.
直接接触地面可使“主宰者”免受电磁攻击和护盾流失。
In this paper, the method based on the combination of wavelet transform and BP neural network is presented to realize fault location for the single-phase-to-earth fault in non-direct-ground systems.
提出一种基于小波变换与BP神经网络相结合的方法来实现小电流接地系统单相接地故障定位。
In this paper, the method based on the combination of wavelet transform and BP neural network is presented to realize fault location for the single-phase-to-earth fault in non-direct-ground systems.
提出一种基于小波变换与BP神经网络相结合的方法来实现小电流接地系统单相接地故障定位。
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