The mine subsidence disaster discipline is the frontier crossing branch of science among geology, ecology, mining, rock soil mechanics, information science, management science and sociology.
矿山沉陷灾害科学是地质学、生态学、采矿学、岩土力学、信息科学、管理科学和社会学之间的交叉边缘学科。
Frequency spectrum analysis and the crossing point of voltage are adopted to control the corresponding filter branch switch.
采用了频谱分析法和电压过零点控制相应的滤波支路投入运行。
Frequency spectrum analysis and the crossing point of voltage are adopted to control the corresponding filter branch switch.
采用了频谱分析法和电压过零点控制相应的滤波支路投入运行。
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