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hazards
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  灾害
     The Analysis of Basin Dynamics in Bohaiwan Region and Study on Geological Hazards of Oilfield
     渤海湾地区盆地动力学分析及油田地质灾害研究
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     The Study on Risk Evaluation Model of Major Geological Hazards on the Land Surface in Guangzhou City Based on MAPGIS
     基于MAPGIS的广州市主要陆地地质灾害风险评估模型研究
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     SECTION SEVEN: COUNTERMEASURES AGAINST SECONDARY HAZARDS IN EARTHQUAKES
     《地震对策》各篇章编写稿之五 第二篇 地震对策各论 第七章 地震次生灾害对策
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     THE CHARACTERISTIC AND CONTERMEASURE OF GEOLOGICAL HAZARDS IN SHANGHAI
     试论上海地质灾害的特点与对策
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     ON GEOLOGICAL HAZARDS OF RAILWAY IN CHINA
     论中国铁路地质灾害问题
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  危害
     Radon and its hazards
     氡与氡的危害
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     Investigation of Occupational Hazards of 2×135 MW Set in Qingdao Power Plant
     青岛市某火力发电厂2×135 MW发电机组职业病危害因素调查
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     The hazards of hexavalent chromium electroplating, and the benefits of trivalent chromium electroplating were analyzed.
     分析了六价铬电镀的危害及三价铬电镀的优点,以及三价铬电镀取代六价铬电镀带来的效益。
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     The operation rate of the protective facilities for occupational hazards90.3%) and the rate of valid detection for occupational risk factors 75.4%) in Shandong province were similar to those of our country90.8% and 77.0%)respectively.
     职业病防护设施配备运行率为90.3%,职业病危害因素检测合格率为75.4%,皆处于全国平均水平(分别为90.8%,77.0%);
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     The compliance rates, based on the catalog of occupational hazards, were 62.38% for physical hazards, 53.52% for the dusts and 89.81% for the chemical hazards.
     按职业病危害因素性质分类,物理因素、粉尘、化学因素检测样品合格率分别为62.38%、53.52%、89.81%,物理因素、粉尘检测样品合格率远低于化学因素检测样品合格率。
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  “hazards”译为未确定词的双语例句
     The Study of Diagnosis and Prediction of Cox's Proportional Hazards Regression Model
     Cox比例风险回归模型诊断及预测有关问题的研究
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     Study of Control Mechanism of Tectonic Settings on Environment Hazards Related to Coal-mining
     构造环境对煤矿区采动损害的控制机理研究
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     General Principles for the Prevention of Occupational Hazards from Chemicals in Bulgaria
     保加利亚控制有毒化学品的一般原则
短句来源
     SYMPOSIUM ON THE RESEARCH AND ANALYSIS OF EARTHQUAKE HAZARDS
     “地震危险性分析研究学术讨论会”概况
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     AN ANALYSIS ON SMARM NATURAL HAZARDS OCCURRED DURING 1581-1670 A.D.
     公元1581—1670年群发性自然灾害的分析
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  hazards
Hazards of the use of biogenic elicitors for inducing protective mechanisms in plants without considering the possible negative effects of the elicitors are considered.
      
The mechanism of this phenomenon, kinetic factors, concomitant hazards, and conditions for its prevention are described.
      
Smoking has been found to increase the frequency of chromosome aberrations in individuals with occupational hazards, but not in those who are not occupationally exposed to radiation or chemicals.
      
The effects of the age of parents, the season and month of conception, occupational hazards at the parents' workplaces, and the place of residence on the risk of STS were analyzed.
      
Tobacco smoking is associated with a slight increase in chromosome damage frequency; however, the difference between smokers and nonsmokers is insignificant even among subjects exposed to occupational hazards.
      
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The roles of the natural development and some properties of the soilsin this area are briefly discussed as follows:The soils are saline and calcareous in nature,in which over 70% of thetotal soluble salts are sodium chloride.Slight to moderate alkalinizationmay be developed,while the total soluble salt contents exceed 0.2%;butgenerally,there is no NaCO_3 present.The ground water table in this areais usally high,and the quantity and constituents of the salts in groundwater are directly varied with and influenced...

The roles of the natural development and some properties of the soilsin this area are briefly discussed as follows:The soils are saline and calcareous in nature,in which over 70% of thetotal soluble salts are sodium chloride.Slight to moderate alkalinizationmay be developed,while the total soluble salt contents exceed 0.2%;butgenerally,there is no NaCO_3 present.The ground water table in this areais usally high,and the quantity and constituents of the salts in groundwater are directly varied with and influenced by that contained in the abovesoils.The saline and alkali properties of soils in this area are originatedfrom the parent materials,through the action of the sea water when theywere deposited.As soon as the sea water ceased to affect,the soils as wellas the ground water are gradurally desalinized by natural leaching and thisprocess will be strengthened by the biological activities.As the desalinization of the soils is proceeded further,the ratio ofNa~+/Ca~(++)+Mg~(++)in the soil solution decreased and the amount of the exchan-geable Na on the soil colloidal complex is finally lowered.It is evident thatdesalinization also introduces the dealkalinization of the soils in this area;there is no hazard of strong alkalinization of the soils taken place throughleaching.

本文简要地说明了江苏省沿海地区盐渍土壤的自然发生过程及盐渍特性转化的规律,文中主要论点,可初步归纳如下:1、本区域的土壤,发育于盐渍性的冲积母质,土层中富含以氯化钠为主的可溶性盐类,并呈一定的“碱性”。土壤碱性表现在两方面:一方面是土壤胶体表面存在有较多的吸附性钠,另方面表现在本身具有较高的pH 值。2、在自然发生过程中,土壤盐渍性为地质过程遗留的影响;随受自然降水淋盐,河沟排水排盐及生物作用的影响,开始“脱盐、脱碱”和肥力积累过程,发育成为本区内现存的各种不同盐渍程度的土壤。3、随着土壤脱盐作用的进行,土壤盐渍的组成在变化;主要是可溶性盐阴离子中钠离子的含量淋失较速,最后降低了土壤溶液中Na~+/Ca~(++)比率。由于这种盐渍组成的改变,土壤胶体上吸收性Na~+也相应的降低,从而导致土壤的脱碱作用。因此本区土壤的脱盐不致引起土壤碱化。4、在自然发生过程中,本区域盐渍土的脱盐过程,一直是在潜水位较高的情况下进行的。在脱盐过程中,潜水位经常在临界水位以内,为本区自然脱盐过程中,最大特点;潜水动能和土壤的脱盐过程,存在着许多内在的联系。在一定地区内,一定盐渍程度、盐渍特性的土壤,则常有和其相适应的矿化潜水类型。...

本文简要地说明了江苏省沿海地区盐渍土壤的自然发生过程及盐渍特性转化的规律,文中主要论点,可初步归纳如下:1、本区域的土壤,发育于盐渍性的冲积母质,土层中富含以氯化钠为主的可溶性盐类,并呈一定的“碱性”。土壤碱性表现在两方面:一方面是土壤胶体表面存在有较多的吸附性钠,另方面表现在本身具有较高的pH 值。2、在自然发生过程中,土壤盐渍性为地质过程遗留的影响;随受自然降水淋盐,河沟排水排盐及生物作用的影响,开始“脱盐、脱碱”和肥力积累过程,发育成为本区内现存的各种不同盐渍程度的土壤。3、随着土壤脱盐作用的进行,土壤盐渍的组成在变化;主要是可溶性盐阴离子中钠离子的含量淋失较速,最后降低了土壤溶液中Na~+/Ca~(++)比率。由于这种盐渍组成的改变,土壤胶体上吸收性Na~+也相应的降低,从而导致土壤的脱碱作用。因此本区土壤的脱盐不致引起土壤碱化。4、在自然发生过程中,本区域盐渍土的脱盐过程,一直是在潜水位较高的情况下进行的。在脱盐过程中,潜水位经常在临界水位以内,为本区自然脱盐过程中,最大特点;潜水动能和土壤的脱盐过程,存在着许多内在的联系。在一定地区内,一定盐渍程度、盐渍特性的土壤,则常有和其相适应的矿化潜水类型。在自然发生过程中,随土壤的脱盐和盐渍特性的转化,潜水似亦随之发生相应的淡化和化学性质的变化。二者转化趋势,大致相符。彼此间的关系,是互相依存、互相制约的,在不断运动的过程中,似先有土壤的脱盐,而生导向潜水的淡化;但就土壤脱盐的过程言,本身同时又是潜水淡化的结果。5、在土壤脱盐的过程中,土壤盐分的动能比较复杂,一方面是全区土壤不断地脱盐,另方面是在一定的条件下,又可产生局部地区土壤表层的盐渍化。前者为本区盐渍土壤自然发生过程的实质,后者为临时性现象。此种现象,最终亦必随同潜水的转向淡化而逐渐消除。

This is a discussion of the natural phenomena and the reported experimental data ofcitrus yellow shoot disease in China which come to the writer's notice.The disease,allied with tristeza virus disease,has long been known.However,in thenorthern citrus growing regions and at high elavations in the southern part,it is entirely ab-sent or only rarely occurs.Shading provided by topography,such as hills of a valley,andother trees,such as wind break and interplanted deciduous fruit trees,is also unfavorablefor its...

This is a discussion of the natural phenomena and the reported experimental data ofcitrus yellow shoot disease in China which come to the writer's notice.The disease,allied with tristeza virus disease,has long been known.However,in thenorthern citrus growing regions and at high elavations in the southern part,it is entirely ab-sent or only rarely occurs.Shading provided by topography,such as hills of a valley,andother trees,such as wind break and interplanted deciduous fruit trees,is also unfavorablefor its outbreak in individual orchards,despite of plenty of severely diseased ones in the sur-roundings.There are several possible explanations for the correlation of macro-and micro-climates with the incidence of the disease.But it is considered important to find out firstwhether the influences are exerted on the vector of the virus or on the post-infectional host-virus relationship.The scions taken from diseased shoots develop into apparently normal shoots which remainhealthy for a considerable length of time.Yellow shoots most frequently make their firstappearance on young trees following a year of over-loading of fruits.There is one case ofsuccessful permanent cure of the young tree at its early stage of disease by simultaneousheavy pruning and side-grafting.These phenomena may be explained on the basis of therelation of top/root ratio to pathogenesis of the virus disease.Apparently,there are specific and varietal differences in tolerance of citrus trees to thevirus infection.Similar differences may also exist among clones and individuals within thesame variety,because scions taken from old healthy-looking trees in diseased area give lowerpercentage of diseased plants than those taken from young trees.Variations in transmission and occurrence of the disease may also be due to the differencein virulence of the virus strains which interfere with each other and the fluctuations or un-eveness of concentration of the virus within its host.The writer hereby expresses the beleif that further researches might lead to the applica-tion of cultural,varietal and vaccinal immunization against the hazard of citrus yellow shootdisease.

柑桔黄龙病在我国北部产区及南部高山发生得很轻微或完全不发生。在南部的重病区中,由于地势、防风林、间作果树等所造成的遮蔭条件也不利于病害的发生。大气候和小气候与黄龙病的相关有多种可能的原因。但首先应当研究它们对病毒传播媒介和侵染后发病的影响。用病芽作为接穗所长出的新梢在相当长时间内没有病状。最容易发病的是着果很多的幼树。初期发病的柑桔树通过重修剪和靠接辅助砧木的方法治疗有成功的实例。这些现象都可以从树冠树根比例与发病的关系来解释。柑桔类的种和品种间显然存在着耐病力的差异。这种差异也可能存在于同一品种的不同株系和个体间,因为用病区老树的接穗比幼树的接穗育成的苗木发病率较低。在黄龙病传播和流行上的许多不一致的现象还可能决定于病毒浓度和株系间毒力的差异及其相互关系。上述问题的研究可能导致栽培免疫、品种免疫和人工接种免疫方法的应用。

Based on a world seismicity map of large earthquakes (M≥7) for the period of years 1900 to 1969, fourteen correlative regions of occurrences of large earthquakes of the same magnitude within the continental territory of our country were found. From them, nine relatively adequate regions were selected by the method of successive regression. Then, from the seismicity of large earthquake occurrences of these nine correlative regions, the possibility of future large earthquakes which may occur in the continental...

Based on a world seismicity map of large earthquakes (M≥7) for the period of years 1900 to 1969, fourteen correlative regions of occurrences of large earthquakes of the same magnitude within the continental territory of our country were found. From them, nine relatively adequate regions were selected by the method of successive regression. Then, from the seismicity of large earthquake occurrences of these nine correlative regions, the possibility of future large earthquakes which may occur in the continental territory of China within the coming one year was predicted. Furthermore, we estimated in the same way, the hazard of destructive earthqukes in a cetain given region, for instance North China, for the coming one year. The result of such estimation for continental China as a whole and North China for the year 1976 is rather satisfactory.

根据1900年—1969年全球大地震(M≥7)的时空图,找出与中国大陆大地震(M≥7)有关的14个相关区,利用逐步回归的方法,对这些相关区逐一鉴别,选取较优的9个,再根据这9个相关区发生的大震来预测中国大陆在未来一年内会不会有大震发生。进一步对某一个地区,例如华北地区,运用同样的方法,亦可对未来一年的地震趋势作出估计。 对1976年中国大陆和华北地区地震趋势作了估计,并得到了验证。

 
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