More than half of children who use electronic media before bedtime may have mood or learning problems during the day, a preliminary study of 40 young people suggests.
一项对40名孩子的初步研究表明，睡前使用电子媒体的孩子大约会有一半人在第二天出现情绪或学习上的问题。
The good cholesterol HDL, which reduces the risks of heart disease, can be dramatically boosted by an experimental drug that also lowers bad cholesterol, according to a preliminary study.
初步研究表明：一种实验药物可显著升高，对人体有益胆固醇HDL含量，HDL可降低罹患心脏病的危险性；该药还可降低有害胆固醇的含量。
The paper also makes a preliminary study of the plant's biological and ecological features and thus paves the way for protection and utilization of this rare and near-extinctive plant.
同时对龙棕的生物学特性及生态学习性进行了初步研究，为保护和开发利用这一珍稀濒危植物资源提供科学依据。
In this thesis we have a preliminary study on the evaporated-cooling intercooler, which possesses several strong points of energy saving, environment protecting and work condition improving.
本文对蒸发冷却式中冷器进行了初步的研究，该技术具有节能、环保、改善工作条件的多重优点。
It's not a generic model, but a preliminary study, of which the specific details will be enriched and completed in further studies.
本文是在“精益”思想与供应链管理思想结合下对供应商管理模式的初步探讨，模式的内容会在更进一步的研究中得以补充和丰富。
In this work, we used BIV as a lentivirus model, and did a preliminary study on the function of bovine ISG15 (bISG15) in latent infection of BIV.
本研究以牛免疫缺陷病毒（BIV）为慢病毒模型，对一种干扰素刺激蛋白ISG15在BIV潜伏感染中的作用进行了初步的探讨。
The compounds of Alkaloidss and flavonoids are main active composition, and there is a preliminary study on the pharmacokinetics of matrine alkaloids and oxymatrine.
其主要活性物质是生物碱类和黄酮类，对其中的苦参碱和氧化苦参碱的药代动力学有初步的研究。
This article on RFID makes a preliminary study of information security management in sensitive fields like the military, national security department, as well as enterprise.
本文就RFID在一些敏感领域像军事、国家安全部门以及企业的信息安全管理中的应用做了初步探讨。
Photochromic N methyl spirooxazine compound has been prepared. The specimen was characterized by 1H NMR and IR, and a preliminary study has been done on the photochromic properties.
合成了具有光致变色性能的化合物N甲基螺恶嗪，对它进行了IR和1HNMR表征，并对其光致变色性能进行了初步研究。
The aim is to look for new ferromagnetic materials and to have a preliminary study on the relations between the magnetism and the polymer structures or the different kinds of metals.
目的在于寻找新型的铁磁有机材料，同时初步研究其磁性能与聚合物结构以及金属种类的关系。
Therefore, in this paper there is a preliminary study on the method of urban master landscape concept planning, in order to expand both extension and connotation of concept planning.
为此，本文拟通过初步探讨城市总体景观概念规划的方法，试图达到进一步扩展概念规划的外延与内涵的目的。
In this paper, the emergence of urban noise sources is analyzed, noise pollution hazards on the crowds causes to a preliminary study, and the urban noise control measures are proposed.
本文主要对城市噪声的产生源进行了分析，对噪声给人群造成的危害进行了初步探讨，提出了城市噪声的控制对策。
Objective By investigating 134 facial trauma patients psychological status, we analyzed the relative factors and made a preliminary study on how to lessen their psychological obstacles.
目的通过对134例颌面创伤患者心理状态调查，分析相关因素，并就减轻患者心理障碍作初步探讨。
This paper conducts a preliminary study of crack resistance and deformation behavior of prestressed concrete girders strengthened with externally bonded FRP in serviceability limit state.
对外贴FRP加固预应力混凝土桥梁正常使用极限状态的抗裂和变形性能进行初步研究。
Based on a preliminary study on the identified multiplier method, it is pointed out in this paper that this method is a unite method of functional transformation in variational principle.
本文通过对已识别拉氏乘子法的初步探讨，指出了已识别拉氏乘子法是变分原理中泛函变换的统一方法。
To perform a preliminary study on CTB asymmetric filling's stability. The results suggest that CTB asymmetric filling has a longer service life at both room temperature and low temperature.
对手性填料纤维素三苯甲酯的水解稳定性进行了初步考察，结果表明，其在常温及低温使用时具有很长的使用寿命。
Imperfect table manners, like spitting food out, appear quite common in the preschool set, though certain mealtime habits may signal a wider behavioral problem, a preliminary study suggests.
不完美的餐桌礼仪，像是把食物吐出来，在学前儿童的生活中似乎颇为常见。但是一项初步研究指出，特定的进食习惯可能反映更广泛的行为问题。
This article, by using the criminal law theory, combined with some relative crimes, conducts a preliminary study to some basic problems on the crime of infringing another's commercial reputation.
本文运用刑法理论，结合相关罪名，对损害商业信誉、商业声誉罪所涉及的一些基本问题进行初步研究。
Based upon the exploration and analysis of Changhong immersed tube tunnel, Ningbo, the paper makes a preliminary study on the geotechnical exploration scheme of immersed tube tunnel in soft ground.
结合宁波市常洪隧道岩土工程勘察实例分析，对软土地基沉管隧道工程的岩土工程勘察方案设计进行了初步探讨。
A preliminary study in New Zealand has shown that classroom noise presents a major concern for teachers and pupils.
新西兰的一项初步研究表明，教室里的噪音是老师和学生最关心的问题。
A preliminary study was carried out on the yielding phenomenon of pure titanium in tension process. The theoretical analysis shows that the phenomenon is related to twinning.
本文初步研究了纯钛拉伸过程中出现的屈服点现象，从理论上分析其现象与孪生关系。
A preliminary study was carried out on the main technical factors affecting slab heating. And the control method and experience of blank temperature of this furnace are presented.
对影响板坯加热的主要技术因素进行了初步研究，并介绍了该炉型板坯温度的控制方法与经验。
A preliminary study on epidemic endemic disease which results from drinking water is made, according to regional distribution law of the elements in groundwater in Jilin province.
本文以吉林省地下水中的元素地域性分布规律入手，对吉林省流行的饮水型地方性疾病进行探讨。
A preliminary study at Imperial College London, involving 62 babies has revealed that those delivered by c-section have higher levels of fat in their livers than those born naturally.
伦敦大学帝国理工学院一项针对62名婴儿的初步研究显示，剖腹产婴儿的脂肪肝水平比自然生产的婴儿要高。
A preliminary study on the application of aerial project team group management in the aerial product development is made in the paper. The practical ways for the development are also given.
对航空项目团队集群管理在航空产品研制过程中的应用进行了初步探讨，指出了在研制中的具体应用方法和途径。
A preliminary study of the operation of the ammonia plant and the performance of the control with sliding pressure shows that the use of the control with sliding pressure is feasible and rational.
本文在对合成氨装置的工作及滑参数调节进行简要的分析后指出，在合成氨装置中应用滑参数调节是可行的、合理的。
A preliminary study of the operation of the ammonia plant and the performance of the control with sliding pressure shows that the use of the control with sliding pressure is feasible and rational.
本文在对合成氨装置的工作及滑参数调节进行简要的分析后指出，在合成氨装置中应用滑参数调节是可行的、合理的。
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