门的变化
Gate/Gates change/changed/to change= Door/Doors/The door change/changed/to change
重点词汇：
gate门; 闸门; 登机门; 入场费; 给…装大门; 电波传送
例：
1、The diameter, height and voltage of the gate electrode are changed to analyze the influence on the electric field and the electron trajectory in the triode。
结合等位线及电子轨迹分析了聚焦栅极的高度、开口半径、电位等诸多因素对于电场分布以及电子注聚焦的影响。
2、The radius of curvature of the emitter tip and the diameter of the gate hole are changed to analyze the influence on the electric field, current density and the electron trajectory。
在保持其它参数不变的条件下，改变尖锥曲率半径、栅孔半径，分析对电场强度、发射电流密度及电子轨迹的影响。
