Acid - leaching reactor is the key instrument for preparing poly aluminium chloride ( PAC ) from kaoline.酸浸反应器是高岭土制备聚合 氯化铝 (PAC ) 的重要设备.The original burnt whiteness of Beihai kaoline is 76 % ~81 %, the whiteness subject ...
梢: 芜菁甘蓝等植物露出地面的部分.The part of a plant, such as a rutabaga, that is above the ground.由于牛蒡露出地面的部份会分泌出一种内酯,可引起接触性皮肤炎,所以采摘时要加倍留神.The green, above - ground portions may cause contact dermatitis due to the lactones the plant p...