The chart below shows the resistancearea at the bottom of the gap. This level was tested three times and failed to make above that level.
下图标示出底底端的阻力位置，经过三次尝试未果，行情向下。
2
The results indicated that total launched weight is a effective assessing criterion which can combine both system mass and resistancearea into a unified criterion.
On the grounds of the pinch-off voltage, the cut-off point of variable resistancearea and saturation area can be fixed, so the field effect tube can reliably work in the saturation area.