The Stochastic mathematic model of maneuvering reentry warhead was proposed, and the rational slide switchsurface was chosen based on the desire of attacking ground target.
建立了机动再入弹头随机数学模型，根据攻击目标的要求选择合理的滑模变结构开关面。
2
The switch works by passing a pulse of current between the tip and the surface.
电源开关的工作原理是让电流脉冲穿过触点和触面之间。
《柯林斯英汉双解大词典》
3
In other words, they flipped a switch, which allowed them to change the electrical conductivity of the silicon without making or breaking a single chemical bond within the surface.