发光率 meaning in Chinese

luminosity factor
luminous emissivity

The brightness or luminance of an object is defined as the luminous flux emitted per unit area of the object into unit solid angle .
物体的亮度或发光率定义为物体面积发射到单位立体角内的光通量。
Absolute threshold of luminance
发光率的绝对阈值
However , according to root tip relative ul rates ( rulrs ) , these cultivars can be divided into five types such as highly al - resistant cultivars , al - resistant cultivars , intermediate cultivars , al - sensitive cultivars , and highly al - sensitive cultivars
根相对伸长率与根尖相对发光率之间具有正相关性( r = 0 . 63295 ) 。并且根尖相对发光率比根相对伸长率更为灵敏。
The determination of al toxicity and al - resistant ability in plant root - tip using ul is still not reported . our experiments show that , according to root relative elongation rates ( rers ) , 30 barley cultivars can be divided into three types such as al - resistant cultivars , intermediate cultivars , and al - sensitive cultivars
本实验表明，利用根相对伸长率可将30个大麦品种划分为耐铝、中等耐铝和敏感三种类型；而利用根尖相对发光率可将其分成高耐铝、耐铝、中性、敏感和高敏感五种类型。