- 1. When the insulated powder pass through the metalline pipe, both generate electrites of egualize in magnitude and opposite symbol.
- 绝缘粉末通过金属管导时，两者带上等值异号电荷。
来自互联网
- 2. When the insulated powder pass through the metalline pipe, both generate electrites of egualize in magnitude and opposite symbol.
- 绝缘粉末通过金属管导时，两者带上等值异号电荷。
来自互联网
