矩阵变换器发展展望
Technology review of matrix converter
绿色能源发展展望
green energy development prospect
青海电网发展展望
Prospect for Qinghai Network
热水器技术的发展展望
Development and Prospect of Water Heaters
Blumlein型高电压脉冲发生器
Blumlein transmission line high voltage generator
坝后冲刷
scour at rear apron of the dam
坝下冲刷
scouring before dam
degradation below dam
downstream scouring of dam
坝下极限冲刷
ultimate erosion below dams