查询词典 pollutant

Now, TH-ASSS has realized ASM1 and 1-D SST Model and reserved good interface for other models. This paper focuses on theory and method of model application in practice. It adopt day-period curve to simulate the variation of influent, pollutant distrubution's normal status and average-HRT to simulate the influence of hydraulic delay in practical system.

本研究重点分析模拟系统与实际系统结合的理论和方法问题，采用进水日周期性变化曲线来模拟实际进水的动态变化，结合污染物排放呈正态分布和动态平均HRT方法模拟水力延迟对模拟结果的影响，将呼吸法测量直接用于参数估计和模型校正中，使模拟系统能够很好地符合实际系统。

Taking boundary reflection, natural degradation and background value into consideration, methods for calculating characteristic parameters of pollutant zone with outfalls randomly placed were presented, and formulas under simplified conditions were proposed.

全面探讨连续点源河流污染带的几何特徵，在考虑了两岸边界的一次反射、污染物的降解和背景值共同影响的条件下，给出排污口在任意位置的污染带特徵参数的计算方法，在简化情况下给出了直接计算公式。

Its fluidity is not good because the pollutant in it cannot be well-distributed easily.

但是无限的减小，必然会导致人力、物力和财力投入的增加。

Then the numerical simulation model of the oil pollutant migration in this kind of water-bearing system is constructed by means of the numerical simulation technology.

在分析水文地质条件的基础上，利用实验研究获得含水系统中连接上下含水层的弱透水层的渗透规律，然后运用数值模拟技术建立起此类含水系统中石油类污染质运移数值模拟模型。

Immersion-wet-dry combined cyclic test was applied to study the synergistic effect of chloride and sulphur-bearing pollutant in atmospheric corrosion of mild steel.

氯化物、硫污染物对碳钢大气腐蚀的协同作用蔡健平，郑逸苹，刘寿荣（中国科学院金属腐蚀与防护研究所沈阳110015）摘要应用浸渍－润湿－干燥循环法研究了氯化物、硫污染物对碳钢大气腐蚀的影响。

Sulphur dioxide is a pollutant and a major contributor to acid rain.

二氧化硫是一种污染物，并且是形成酸雨的主要因素。

So far research on antibiotic production wastewater treatment has mainly focused on the removals of organic pollutant and sulphate and hydrogen sulfide produced during sulphate removal with anaerobic process.

迄今为止，虽然对抗生素废水处理技术的研究很多，但基本上是针对有机物和硫酸盐以及硫酸盐在厌氧过程中产生的高浓度硫化氢去除的研究，而对脱氮除磷、脱色以及剩余污泥处理的研究，尤其是综合治理技术的最优化和工程实际应用的研究很少。

The boiler thermal efficiency was calculated according to the ASME FIRED STEAM GENERATORS PERFORMANCE TEST CODE . The varieties of temperature, flow rates of steam and feed water, gas pollutant emission and carbon content in the bottom ash and fly ash were measured, and some disciplinary results were obtained.

在额定蒸发量为410t/h的超高压循环流化床锅炉上进行以无烟煤、石油焦混合物为燃料的锅炉热力性能试验，根据ASME锅炉性能规程计算了锅炉热效率，并对温度、汽水流量、气态污染物排放、灰渣含碳量等多个参数进行了测试，整理得到了一些规律性的结果。

Article 11 All units and individuals discharging directly pollutants into the sea must pay pollutant discharge fees in accordance with the State regulations.

第十一条直接向海洋排放污染物的单位和个人，必须按照国家规定缴纳排污费。

The tracer migration that the tracer concentration continuously injecting into semi-infinite sand column(initialization velocity is zero) and the pollutant continuously enter into aquifer through a discharging well that completely enter into the dive aquifer are two representative groundwater pollution problems ,Then this paper respectively sets above two decided solution problems and the union simulation problem of groundwater and solute as examples, from the question description, the mathematical model selection and determination, the parameters selecting to carry on the value computation, the read-write of attribute data , visualizes by the IDL programs, carries on the numerical simulation and the visualization post-processing to the above groundwater pollution problems, and according to the numerical solution and the solute migration curves, briefly analyzes and predicts the temporal and spatial distribution features and distribution range of contaminant concentration.

然后分别以半无限长沙柱中连续注入示踪剂浓度的运移、污染物通过一完全进入潜水层的排放井连续进入含水层这两个典型地下水污染定解问题及地下水流和水质联合模拟问题为例，从问题描述、数学模型选取确定、参数选取到运用IDL编程进行数值计算、属性数据读写、可视化，对上述地下水污染问题进行数值模拟和可视化的后处理，并根据数值模拟的数值结果和溶质运移曲线，对污染物浓度的分布范围及随时空变化趋势作了简要分析预测。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。