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by researchers in the Soviet Union in 1950. A sliding mode control (SMC) differs from a simple relay controller because it relies on high-speed switching of control values and can be changed..., its control signal is discontinuous and produces adverse chattering phenomena [28] that may stimulate the high- frequency dynamics of system and, in the worst case, cause system instability......
is an underground two-story station with a main length of 180 m and was constructed via island-type excavation. The maximum excavation dimensions of the station tunnel are 22.16 m wide and 19.21 m high... and -7.335 MPa, respectively). Each tunnel is subjected to high compressive stress at the inverted arch, and because of the triangular layout of the tunnel, the arch waist of the running tunnels......
Yue-xian, MA Li-qiang, WU Lun, et al. The role of surface cleaning in high intensity conditioning[J]. Powder Technology, 2017, 319: 26-33. [5] YIN Wan-zhong, XUE Ji-wei, LI Dong, et al. Flotation... in acoustic cavitation[J]. Physical Review Letters, 2009, 102(8): 84302. [64] PENG Yao-li, MAO Yu-qiang, XIA Wen-cheng, et al. Ultrasonic flotation cleaning of high-ash lignite and its mechanism[J......
, 2012. [31] LIAO H. Health risk associated with dietary co-exposure to high levels of antimony and arsenic in the world's largest antimony mine area[J]. Science of the Total Environment, 2011, 409(18......
