metallic c element金属元素
metallic alloying element金属合金元素
metallic rubber element金属橡胶元件
metallic heating element金属加热元件
Metallic Chemical Element金属化学元素
metallic nutrient element金属养分元素
metallic fuel element金属燃料元件
coupling with metallic elastic element金属弹性元件联轴器
coupling with non-metallic elastic element非金属弹性元件联轴器
But compares with the Poyang Lake basin bottom putty background value, these 3 metallic element average content surpasses the background value separately 28.9 times of 8.3 time of 4.8 times.
但与鄱阳湖流域底泥背景值相比,这3种金属元素的平均含量分别超过背景值的28.9倍8.3倍4.8倍。
参考来源 - 饶河乐安江段及入鄱阳湖口处沉积物中重金属的空间变化和污染特征