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Using three different types of living aquatic plants Rhizome of Oldworld Arrowhead, water lettuce, and Brazilian milfoil as test materials,we study a single planting of that three aquatic plants' impact on eutrophicated water DO, BOD, COD.

中文摘要：选择三种不同生活型水生植物慈姑（Sagittaria sagittifolia 、大薸、穗状狐尾藻为试验材料，研究了单一种植这三种水生植物对富营养化水体中的DO、BOD5、COD的影响。

Compared with the traditional method of retting in warm water, the technology could gain another net profit 271.2 Yuan per ton of flax fiber, the BOD and the discharge of the SS of the degumming water could be decreased by more than 33% and 89% respectively.

与传统温水沤麻方法相比，每加工1吨亚麻原茎，增加直接经济效益271.2元；沤麻水的生化需氧量(BOD5)和悬浮物排放总量分别减少33%和89%以上，在提高沤麻水的利用率、生产效率和改善劳动环境等方面有显著的社会生态环境效益。

"Harry.Bod and Phenix secret order" will be showed in UK and USA in July next year.

《哈利·波特与凤凰会的密令》将于明年7月在英国和美国上映。

Harry.Bod and Phenix secret orderwill be showed in UK and USA in July next year.

哈利·波特与凤凰会的密令》将于明年7月在英国和美国上映。

But the main contributor of BOD was point source pollution.

而BOD的主要贡献者则是点源污染。

The major pollution indicators are potassium permanganate index, BOD and ammonia nitrogen.

主要污染指标是高锰酸盐指数、生化需氧量和氨氮。

By analyzing the framework of RRM based on BoD for broadband satellite systems, this article decomposed the framework into five main function parts.

在分析基于带宽按需分配的卫星无线资源管理体系结构的基础上，将其分解为5个主要功能部分，并将现有宽带卫星无线资源管理技术的研究成果分别对应到这5个功能，重点对每个功能近年来的实现算法进行了分类总结，并分析比较了各类算法的特点与存在的问题，最后就进一步的研究方向提出了建议。

By experimenting with solid-liquid separator in the treatment of sewage before it is discharged on three large scale pig farms, we come to the conclusion that solid-liquid separator is effective in gathering dung sullage, with about 2.9 t/h and the water content less than 55%. The average rates of removal of TS, COD, and BOD are 82.5%, 77.5% and 73.5%, respectively. ByKey words: FZ-12 solid-liquid separator; large scale pig farm; sewage treatment

为了了解FZ-12固液分离机前处理效果，对3个规模化猪场进行污水前处理试验，结果表明，FZ-12固液分离机能有效地收集粪渣，平均收集量为2.9t／h左右，粪渣含水率〈55％，对猪场污水的TS、COD和BOD平均去除率分别达到82.4％、77.5％和73.5％，应用该机处理猪场污水，增加相关投资约人民币5.3万元，收集的粪渣出售后，扣除运行成本，年可增收税利约人民币4.5万元，投资回报率达84.9%，约1.18年可收回投资，因此，应用FZ-12固液分离机处理猪场污水，具有广阔的应用前景。

It is pointed out that under the condition of the temperature of 1120℃, the reaction time of 16 mm and the carbon content of 27%, the metal transformation rate of sponge iron used for general metallurgy is up to 90%. But the optimal carbon content is 29% for iron sponge to treat DSD acid oxidation wastewater. Under condition of the wastewater's pH value of 3 to 5 and the reaction time of 40min, the removal rates of COD and color are 68% and 90%, respectively. The BOD/COD ratio is up to 0.425 when DSD oxidation acid water is treated with sponge iron.

研究表明：在配碳量27%、反应温度1160℃、反应时间16min的情况下，以铁泥为原料制备的常规海绵铁的金属化率可达90%以上；用于处理DSD酸氧化废水的海绵铁适宜配碳量为29%，用制备出的海绵铁处理DSD酸氧化废水，在pH值3~5、反应时间40min时，出水的COD去除率可达68%、色度的去除率达90%、可生化性指标BOD/COD提高到0.425。

Every body in the universe attracts every other body with a force directly proportional to the product of the masses of the two bod ie s and inversely proportional to the square of the distance between them.

宇宙中每一物体都以一引力吸引另外的每一物体，该引力与两物体质量的乘积成正比，而与两物体之间的距离平方成反比。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。