Using polarized light photography fix the dust mark of fuscous textile 用偏振光摄影固定深色纺织物上的灰尘痕迹
2.
The results indicated that the roots of nodules legume plants are soft and tint in color , whereas the roots of no - nodules legume plants are firm and fuscous 结果表明，结瘤豆科植物的根系松软，颜色较浅，为白色或土黄色；不能结瘤的植物根系坚硬，颜色较深，为黑色或深褐色。
