Parents and teachers say children are having memory and concentration problems.
家长和老师都反映孩子有记忆力不好与注意力分散的问题。
The scattering problems and the dynamic stress concentration problems of SH-wave by double circle cavities, and circle lining in near field are investigated in this thesis by the method of FEM.
本文采用有限元法研究近场双圆形孔洞、圆环形衬砌对瞬态sh波的散射和动应力集中问题。
He pleaded family problems for his lack of concentration.
他解释说注意力分散是因为有家庭问题。
No serious problems thus far aside from some fatigue, lower concentration, and occasional sleepiness.
除了感觉有一些疲劳，低血糖和略微的嗜睡外还没发生什么很严重的问题。
The energy concentration is only one of its problems.
能源集中化不过是其的众多问题之一。
Chinese auto industry 's main problems are small scale, low industry concentration, backward produce technique and lack the ability to develop independently.
中国汽车工业面临的主要问题是企业规模小、产业集中度低、生产技术落后和缺乏自主开发能力。
It showed people with insomnia were 4 times as likely to have relationship problems, 3 times as likely to feel depressed and 3 times as likely to suffer from a lack of concentration.
报告指出，失眠的人出现感情问题的机率是睡眠充足者的4倍，他们感到抑郁和集中力不足的机率也是睡眠充足者的3倍。
In particular, we need to tackle the problems of excessive concentration of power and lack of checks on power.
特别要解决权力过分集中和缺乏制约的问题。
The contact problems are non-linear problems, which relate to stress concentration, local boundary nonlinear, no-reversibility of shear force, and so on.
接触问题是非线性问题，涉及到应力集中、局部边界非线性、切向力的不可逆性等一系列非线性问题。
The analysis shows that, concentration of inhibitors being too high or too low, and incorrect appraisal method etc. problems exist in the on-site application.
分析认为现场应用中存在着缓蚀剂浓度过大或过小以及对缓蚀剂的评价方法不正确等问题。
Some opinions are given about problems in concentration process.
对母液浓缩过程中的一些问题提出了看法。
RESULTS: 389 pieces of improper medical advises were found, involving problems in compatibility, dose concentration, interval of drug administration and erroneous advising.
结果：发现不合理医嘱389条，包括配伍、剂量浓度、给药频次、医嘱开具失误等方面的问题。
The principle, method and case history how to predict the average uranium mass concentration in lixivium of in-situ leaching are introduced and the existing problems are discussed.
介绍了矿床采区浸出液中平均铀质量浓度的预测原理、方法和实例，并讨论了存在的问题。
Of the problems of tube wear with powder, the influence of particle size, concentration and pressure of carrier gas on erosion was studied.
在粉料输送管道磨损问题中，研究了粉料粒度、输送浓度和输送气体压力对磨损量的影响。
The achievement of Laser micro-probe spectrochemical analysis of doped element concentration in laser crystals is reviewed and several essential problems in its field are described.
本文概括介绍了激光微区光谱定量分析激光晶体中掺杂元素浓度的研究成果，着重讨论了定量分析中的几个主要问题。
Problems like the random error, gross error and the lag-time measurement of output concentration, make the spot data hardly reflect the practical evaporation process.
氧化铝蒸发过程实时检测数据往往存在随机误差或显著误差，且出口物料浓度检测大滞后，使得实测数据难以真实反应实际生产状态。
The pollution problems in different areas of the watershed were related with industries in the areas and the type and concentration of pollutants had obvious industry characteristic.
流域内不同地区的水污染问题与其周围环境中的主要工业行业相关，污染物的种类和浓度有着明显的行业特征。
The method solves the problems that the concentration of the secondary refrigerant is reduced and salt is lost;
本发明解决致载冷剂浓度降低盐份流失的问题。
Using a combustion model some problems such as: the relationship between ignition delay and fuel concentration, the relationship between soot concentration and the equivalent ratio of mixt...
利用该燃烧模型进一步研究柴油机的燃烧和碳烟生成中的一些问题：如点火延迟时间与混合气浓度的关系，排气中的碳烟浓度与混合气油气当量比的关系。
The principle, procedure and data processing of the analysis method of gas concentration based on optics are described. The problems and development trend of this method are analyzed.
对基于光学的气体浓度分析方法的原理、方法及数据处理进行了阐述，分析了气体浓度光学分析方法的存在问题及发展趋势。
The principle, procedure and data processing of the analysis method of gas concentration based on optics are described. The problems and development trend of this method are analyzed.
对基于光学的气体浓度分析方法的原理、方法及数据处理进行了阐述，分析了气体浓度光学分析方法的存在问题及发展趋势。
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