A rough approximation would be the dual spirals in pinwheel.大致近似于纸风车上的双重螺旋线.Single pale blue, may show dark pinwheel marking when grown cool ; 4 - 6 per peduncle, very floriferous.单瓣淡蓝色花, 当天气转凉时或许会出现深色的线条缟花,每个花梗有4-6朵花, 很...
These units of energy are photons or quanta.这种能量单位称为光子或量子.With good light collection, about 30 % of the luminescence quanta may reach the photocathode.在良好的光收集条件下, 约30%的荧光量子可以到达光阴极.The basic dynamic variables are then the...