From this point of view,considering the physics interests of BESⅢ,we discussed some typical decay channels related with trigger efficiency and hope it will be helpful for the trigger table design.

This paper studies deeply trigger decision criterion of the PHOS in ALICE experiment by simulation, including three parts: 1) the energy reconstruction performance of PHOS is tested; 2) the selection of trigger threshold is analyzed and the trigger efficiency is calculated; 3) the trigger rate of PHOS is evaluated and its selection is discussed for the different collision mode.

Also we checked whether the settings of L?3+Cosmics trigger system by simulation are correct or not and introduced a method on trigger efficiency calculation.

Mathematical equations for estimating the torque capacity, power loss due to spin action, and contact efficiency of the elliptical contacts of the parallel axle toroidal CVT are formulated and expressed in the form of integrals which can be readily evaluated by numerical scheme.

On the basis of synergetic prediction model of slope instability which is presented by authors, nonlinear features which slopes show in the course of development are discussed in this paper, meanwhile, trigger effect of external factors is studied.

This paper studies deeply trigger decision criterion of the PHOS in ALICE experiment by simulation, including three parts: 1) the energy reconstruction performance of PHOS is tested; 2) the selection of trigger threshold is analyzed and the trigger efficiency is calculated; 3) the trigger rate of PHOS is evaluated and its selection is discussed for the different collision mode.