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- The spent acid is passed on to be denitrated. 废酸则被送去脱硝。
- This method was uneconomic for it was impossible to recover the spent acid. 由于不能回收废酸，所以这个方法是不经济的。
- The corrected FISE metho d of determining active hydrofluoric acid in spent acid solutions is fast, simpl e, accurate and consumes a little acid solution sample. 此法快速、简便，消耗酸液样少，测定值准确可靠。
- The acid cleaning units - used in iron and steel industry - produce a mass of spent acid.After being concentrated and circulated, the spent acid are decomposed in the Roaster. 钢铁企业轧钢酸洗机组中产生的大量废酸液，经浓缩循环后进入焙烧炉热分解。
- When clay mineral has been treated by fluoboric acid and mud acid,cation exchgnge capeity (CEC) and exchange hydrogen ion will be decred,and the Spent acid still has some capability to lower CEC. 粘土被氟硼酸、土酸处理后，阳离子交换容量（CEC）、交换性氢都将降低，且残余酸液还具有一定的降低CEC的能力。
- In conventional acidizing to low permeability reservoir, the formation will be damaged again owing to the unthorough flowback of the spent acid, so foamed acid has been used. 针对应用常规酸化技术对低渗油层进行改造时,由于返排不彻底对其造成二次污染,故建议使用泡沫酸。
- She spent an hour in quiet contemplation. 她静静地沉思了一个小时。
- They spent their lives in servitude. 他们在奴役下生活。
- The boys spent the night under canvas. 孩子们在帐篷里过夜。
- I spend most of my time scouting around for book. 我把大部分时间都用来找书了。
- I spent my early childhood in my hometown. 我在故乡度过了自己的孩提时代。
- Money spent on business expenses is deductible. 业务方面的开支是可扣除税款的。
- Heap Leaching of Copper and Zinc Oxide Ore with Spent Acid 废酸堆浸氧化铜锌矿工艺
- We spent every last penny we had on the house. 我们的钱全部用在房子上了。
- I do not know why acids eat in metals. 我不知道酸腐蚀金属的原因。
- A large proportion of my time is spent in studying. 我的大部分时间花在学习上。
- I spent some time in working over these books. 我花了一些时间去好好研究这些书籍。
- I spent what little time I had with my family. 我仅有的那一点时间都与家人在一起度过了。
- She had spent all her working life in the factory. 她一生的工作时间都是在这座工厂里度过的。
- He spent the day pondering the steps to be taken. 他整天在思路该采取的步骤。
