南疆盆地东端极端干旱区
Hyper arid area on the east end of south Xingjiang basin
N-极端矩阵测度
N-extremal matrix measure
变电极极谱仪
two-electrode polarograph
单极（PN极）特性测试结构
Test constucture of single-polar characterise
冬季极端气温
Extreme temperature
extreme temperature in winter