A crushing chamber is formed between a concave liner and a mantle liner. A bond head is heated to a bond head setting temperature T1, which is higher than Tm, and a substrate is heated to a substrate setting temperature T2, which is lower than Tm. This is achieved by virtue of the fact that the pusher plate is fixed in a height-adjustable manner to the slide housing and can be moved out of an erected work setting into a flattened position. A testing system including at least 100 of the flash memory devices and a mass-testing board is disclosed. The system includes a memory for storing the audio information, a speech synthesizer and a speaker for converting the audio information to the audio message and a microprocessor connected between the memory and the speech synthesizer for controlling the generation of the audio message. The emitter layer, standoff layer, insulation layer, and gate layer are sequentially deposited, and the unwanted portions of each are preferentially removed to provide the desired structure.