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As pollutants are migrated in the unsaturated zone, biologic oxidation zone is produced in the upper part and biologic reduction zone is developed in the underside. 污染物在包气带中迁移时,会在表层形成生物氧化带,在下部形成生物还原带。
By controlling the area under secondary air to be a reduction zone,the organic amine in the waste liquor turns into NHi,which further reacts with NOx decomposed from HNO 3 to form N 2,leading to the reduction of NO x emission. 通过控制二次风以下区段为还原气氛，使己二胺废水中的有机胺转化为NHi，然后它与由硝酸分解产生的NOx反应生成N2，可减少NOx排放量。
Through the analysis of material and construction, the dissimilar steel gear is successfully welded using stress reduction zone by heating and proper assemble and welding sequence. 通过对铸焊齿轮的材料和结构的分析;利用“加热减应区”法及适当的装配焊接顺序;成功地焊接了异种金属的合金钢齿轮.
Carbonate dissolution and precipitation correspond with reduction zones of redox. 简要讨论了早期成岩作用中硫酸盐还原反应的研究意义。
The Norwegians live in a comparatively cold zone. 挪威人生活在比较寒冷的地区。
The reduction of unemployment should be paramount. 降低失业率应是头等大事。
Supplies were parachuted into the earthquake zone. 救援物资已空投到地震区。
Some people live in Torrid Zone. 有些人生活在热带。
I'd like to see Europe as a nuclear-free zone. 我希望欧洲成为无核区。
The troops detrained near the battle zone. 部队在战区附近下了火车。
Influence of the Stoichiometric Ratio and Temperature in Reduction Zone on Effect of Reburning by Natual Gas 天然气再燃技术中再燃区空气过量系数和温度对再燃效果的影响
The forthcoming talk hold out the hope of real arms reduction. 即将举行的会谈给实现真正的裁军带来了希望。
Queue forme at the ticket office when the news of the fare reduction get out. 票价下调的消息一传出，售票处前就排起了队。
They are pulling their troops out of the battle zone. 他们正把部队调离战区。
A reduction in pace, force, or intensity; a slowdown. 减慢，放松速度、力量或强度减弱; 放慢
They have declared their country a, nuclear-free zone. 他们宣布本国为无核区。
What reduction will you make on this article? 这个东西你要减价多少?
There is no room for any reduction in price. 价格毫无再减的余地了。
Wrestling is in a twilight zone between sport and entertainment. 摔跤是介於运动和娱乐两者之间的活动。
The talks resulted in reducing the number of missiles/missile reduction. 谈判结果削减了导弹数量。