1. E. Once the sidegate voltage is changed in quasi-stable state, hysteresis loops disappear immediately.
发现沟道电流的低频振荡与旁栅关系密切，旁栅电压无论朝正或负方向变化都存在一个阈值电压，只要超出该阈值，沟道电流的低频振荡就消失，这一现象还未见报道。
2. A VB program is developed in AUTOCAD. According to the general structure of mould frame CAD's system and realizing method, the structure of the SideGate frame CAD and the software realizing principle was expounded.
采用VB对AutoCAD进行二次开发，根据一般模架CAD系统的体系结构和实现方法阐述了大水口模架CAD的结构和软件实现的原理。