An electric equipment includes: first opening 7 provided on rear panel 4 to exhaust internal air out of casing 1; first partition 12 covering second opening 8 provided on left side panel 2 and having fourth opening 10; second partition 13 covering third opening 9 provided on right side panel 3 and having fifth opening 11; and radiator 14 disposed so as for opening 14C at one end to face opening 7. The received signal is transformed to represent a time-perceptual frequency-amplitude domain. The refiner fillings are caused to be rotatably moved relative to each other and pressed against each other, thereby transmitting mechanical a refining action to the cellulose fibers. By forcing an incoming flow stream containing cells and DNA, for example, close to the electrodes using another flow stream improves the efficiency of the DNA trapping. The feed roller bearing support portion of the curved part supports one of the feed roller support bearings. A plurality of trenches are located below the body regions in the drift region of the epitaxial layer.