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 ...
Most farmers have bank managers breathing down their necks.大部分农场主的一举一动都受到银行经理们的密切关注。They were up to their necks in trouble with the press.他们深深卷入了与新闻界的麻烦之中.Mayors wear chains round their necks as badges of office.市长们戴着象征职...
他重新树立自己地位的机会因教练的战术而流产了。His opportunity to re-establish himself had been nobbled by the manager's tactics.我在大约第16至18孕周时又经历了一次自然流产。I had another spontaneous miscarriage at around the 16th to 18th week.他的女朋友做了流产。His gi...