查询词典 tn

The change of zooplanktonic species composition and abundance were larger than that of phytoplankton.

由静止状态到大水流状态，藻类数量呈现递增趋势，这与相应的TDN／TN、TDP/TP呈递减趋势相呼应。

The results show that CODCr and BOD5 can be decontaminated efficiently in daily level,the ability of treating total phosphorus and total nitrogen descends in abnormal period and the unstable running of sediment pool contributes to the instability...

结果表明：此污水处理系统在运行效果下降期间，对日常用水变化量范围内的CODCr和BOD5能够起到相对稳定的净化作用；对TP和TN去除能力较差；沉淀池运行不稳是导致整个系统处理能力下降的主要原因。

The contents of OM, TN and TP have a little change in the first year after the shrub is deforested.

土壤pH值在年内的变化同土壤有机质相似，但变幅不大。

In order to simulate the biodegradation of dewatered sewage sludge in landfill several parameters include TOC,VFA,TN that related to dry fermentation course of dewatered sewage sludge were measured.

为模拟污水厂脱水污泥在填埋场中的生物降解过程，进行了脱水污泥干发酵的实验研究。

From the analysis of the magnetic susceptibility,TOC,TN,pigment,organic car-bon isotope ,HI,saturated hydrocarbon and 14C dating etc. of the sediment samples from coresof two boreholes in the Taihu lake,a knowledge of the evolution of paleoenvironment of thelake during the last 14ka is achieved. The results show that the lake has undergone the fol-lowing stages .. The Lake was at a low level ,or even became exposed during 14.3-13.3kaBP,reflecting an arid climate. There existed a transitional stage during 13.3-12.4kaBP,the climate being slightly warm and wet. There are indications of a cold and dry climate around 11.5kaBP,probably corresponding to the Younger Drays event ,comparable with other areas in east China.

本文根据东西太湖短柱岩芯的沉积物的物理、化学、生物指标的综合分析，讨论了该区距今14ka来的古气候变化过程，结果表明14.3-13.3kaBP，太湖水位低，环境指标甚至表现为暴露特征，反映了气候干旱：13.3-12.4kaBP，为偏暖湿的过渡阶段；该孔柱270-280cm(11.5kaBP左右)各类指标均明显更映冷干特征，可能是Younger Drays事件的记录，与我国东部其它地区有可比性；约10.9-10kaBP，这一时期是整个研究时段内一个较显著的温暖期。

The Birmingham hip-resurfacing system, manufactured by the Orthopaedic Reconstruction Division of Smith %26amp; Nephew is a smooth chrome-cobalt ball-and-socket joint that preserves more of the patient s natural bone structures and stability, covering the joint s surfaces with an all-metal implant that more closely resembles a tooth cap than a hip implant.

Birmingham臀部重塑系统是由Smith %26amp； Nephew公司(Memphis， TN， USA)的整型外科重建分部制造的，是一种光滑的铬钴球型套筒关节连接装置，能够保留患者自然骨骼结构和稳定性，全金属移植物覆盖关节表面，更象一个牙齿帽状结构而不是一个臀部移植物。

Soil physical properties(Water saturated content、Field capacity、Capillary porosity、Non-capillary porosity、The total porosity) The number of micro-organisms(bacteria,fungi and actinomycetes)、activity of the enzyme and nutrient content (Organic matter、TN、AN、P、AP) In the two types of landscape are reflected in the type of surface(0-20cm) higher than the sub-surface(20-40cm).

2土壤物理性质(饱和含水量、田间持水量、毛管孔隙度、非毛管孔隙度、总孔隙度)、微生物数量、酶活性(过氧化氢酶、脲酶和蔗糖酶)及养分含量(有机质、全氮、有效氮、全磷、速效磷)在不同景观及其界面中均表现为表层(0-20cm)高于亚表层(20-40cm)。

The results of continuous experiments with BAF show that: the short nitrification occurs when the Qair/Qinfluent ratio is 4:1 with NO_2~--N accounting for 72% of NOx--N; the suitable recirculation rate is 200%; the ratio of external acetate dose to NH4+-N concentration is 2:1 attributing to the short nitrification; BAF needs being backwashed when the headloss increases to 6 cm every 17~20 days; in the water reuse context, 98.7% water yield can be obtained.Lastly, the long-term operation of SBR-BAF system indicates it can treat the wastewater efficiently.

BAF反应器连续流试验结果表明：最佳气水比为4：1，硝化类型以短程硝化为主，NO_2~--N占到NOx--N的72%；综合考虑对TN的去除率和动力消耗，最佳回流比为200%；最佳缺氧/好氧容积比为3：5；由于短程反硝化较全程反硝化碳源需求量低，在BAF反应器进水NH4+-N 40mg/L左右的情况下，乙酸钠投加量为80mg/L以COD计设定水头损失达到6cm时进行反冲洗，随水温不同，反冲洗周期为17~20d，产水率为98.7%。

Soils from the study sites show the typical characteristics of an Andisol, being strongly acidic, with fewer exchangeable cations, a low base saturation, and an accumulation of soil organic matter with Al-compounds which are recalcitrant to decomposition. Therefore, the effects of vegetation types on the contents of SOM, TC, TN, and CEC were not significant.

本试验区为典型的火山灰土壤，土壤呈极强酸性，可交换性阳离子浓度与盐基饱和度极低，加以腐植质与活性铝形成不易为微生物分解的复合物，造成大量有机质聚积，因此不同天然植被对土壤有机质、碳氮浓度及CEC之影响均不显著。

For the TN process ladles are lined with dolomite, and for the SL process both fire clay and magnesia brick are suitable.

经钢包喷粉处理，可使钢中S.002～0.005％，P.005%，O.0015％，消除MnS型夹杂，形成不易变形的钙铝尖晶石型夹杂物。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。