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safety     
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  安全
     Research on New Safety Assurance Technology of Distributed Control System--Safety Kernel
     分布式控制系统中新安全保障技术的研究——安全核技术
短句来源
     Research on Assessment Models of Maritime Traffic Safety and Simulation Applications
     海上交通安全评价模型及仿真应用的研究
短句来源
     nonlinear analysis model for safety monitoring of large dam dynamic system
     大坝动力系统的安全监控非线性分析模型研究
短句来源
     Research on Fundamental Theory and Crucial Method of Freeway Safety Design
     高速公路安全设计基础理论及关键技术研究
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     The Research of Reliability of Dam Safety Monitoring and Controlling System
     大坝安全监控系统可靠性研究
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  安全性
     The Key Technology Research of Motor Vehicle Safety Performance Inspecting and Control System
     机动车安全性能测控系统关键技术研究
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     The Research of Real Time Safety Monitoring System of the Bridges' Foundation and Engineering Application
     桥基安全性实时监控体系与工程应用研究
短句来源
     A Study on the Modeling and Analysis Technique of System Safety Analysis Based on Petri Nets
     基于Petri网的系统安全性建模与分析技术研究
短句来源
     A Study on the Technique of System Safety Analysis
     系统安全性分析技术研究
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     Studies on Mechanism and Ecological Safety Assessment of Transgenic Hybrid Poplar 741 with Two Insect-resistant Genes
     转基因741杨的抗虫效应及生态安全性评价
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  安全的
     Economic Analysis and Management Study of Agrifood Safety
     食品安全的经济分析与管理研究
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     Study on the Safety of Vessel Traffic in the Yangtze River
     长江通航安全的若干问题研究
短句来源
     Study on Operation Safety of Complex Transport Mechanical-Furnishment
     复杂运输机械装备运行安全的研究
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     Relationship between Parameters of Earth-Leakage Protection and Safety
     漏电保护参数与安全的关系
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     Fault Tree Analysis for Recovery Boiler Safety
     碱回收喷射炉安全的故障树分析
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  安全度
     The calculated results of the overall safety factors of the arch dam by the strength reserve method,the water-level overcharge method,and the water specific gravity overcharge method are 3.0-3.5,1.5-1.6,and 2.0-2.3,respectively.
     采用强度储备法、水头超载法、水密度超载法计算的白鹤滩拱坝的整体安全度分别为3.0~3.5,1.5~1.6和2.0~2.3。
短句来源
     Safety control on pile foundations
     桩基础安全度控制的若干问题
短句来源
     Fuzzy comprehensive evaluation method was used to calculate the safety degrees corresponding to management and to the human-machine-environment system composed of flight,support and maintenance subsystems.
     采用模糊综合评判方法计算民航系统的管理安全度和由飞行、航空保障、维护与维修3个子系统安全度组成的人-机-环境安全度,在此基础上得出系统的综合安全度.
短句来源
     0.004456±0.000144(10~(-6))and 0.003945±0.000089(10~(-6)) ((?) ±SD)respectively. The degree of Safety was 0.0004456(10~(-6)).
     )的水质中,48小时和120小时的LD_(59)±SLD_(50)分别为0.004456±0.000144和10.003945±0.000098(10~(-9)),安全度为0.0004456(10~(-(?)
短句来源
     EARTHQUAKE SAFETY OF CHINESE TAILINGS DAM(13)──1-D SEISMIC RESPONSE ANALYSIS OF THE 1976 DASHIHE TAILINGS DAM
     中国尾矿坝地震安全度(13)──1976年大石河尾矿坝一维地震反应分析
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      safety
    A group of scientists conducted a comprehensive investigation on ecological safety and water and soil erosion in the Northwest Loess Plateau, Northwest China.
          
    Therefore, the extension scale of converting cropland to forest could be enlarged properly in the reservoir area, while it should be limited in the non-reservoir area due to the issues of higher population density and food safety.
          
    The infrared sensors around the robot improved its safety in avoiding barriers.
          
    Frequent natural disasters and man-made catastrophes have threatened the safety of citizens and have attracted much more attention.
          
    Disaster prevention, disaster reduction and disaster rescue are the important parts of national public safety.
          
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    Ericerus pela Chavannes, the insect producing white wax,belongs to Coccidae,Homoptera. The female adult lays eggs while the male larva produces wax, whichis a well-known product from Southwest China. The wax secreted by the malelarvae may be boiled and extracted to result in something known as white wax.Its boiling point reaches above 82-83℃. It has manifold uses. Before WorldWar Ⅱ, besides the consumption at home, th greater part of this product wasexported abroad. The supply of the female adults of this wax...

    Ericerus pela Chavannes, the insect producing white wax,belongs to Coccidae,Homoptera. The female adult lays eggs while the male larva produces wax, whichis a well-known product from Southwest China. The wax secreted by the malelarvae may be boiled and extracted to result in something known as white wax.Its boiling point reaches above 82-83℃. It has manifold uses. Before WorldWar Ⅱ, besides the consumption at home, th greater part of this product wasexported abroad. The supply of the female adults of this wax insect in the wax-producing districtusually appears short annually, due to a peculiarity in the growth of this creature;and therefore naturally exist two correlative districts, that is a district of adultproduction and one of wax production. As these two.districts are located morethan 500 kilometres apart,every year the female adults ready to be transplantedon he feeding trees in the district of wax production have to be supplied bythe district of adult production, and they must be carried over a long distance.The carriage of the female adults of the wax insect from one place to theother has been practiced for about five hundred years by the people engaged inwax production. This article reports on a test of transportation of the female adults of the wax insect from Paikuowan (白菓湾) in Hweili County (会理县), formerly of SikangProvince to Huhtaokou (核桃沟) in Omei County (峨眉县), Szechwan Province.Investigations in this connection were made from the April 30 to May 13, 1941. It has long been the aim of the growers to produce the female adults of theinsect and the wax in the same locality. With this realized, the area of wax pro-duction would be enlarged, and the quantity of wax increased. However, as the female adults of the insect in the distr .ct of wax produc-tion are subject to such natural adversities as geographical features, temperatureand humidity, parasitic enemies etc., up to the present they cannot be raised andsapplied insufficient quantity in this district. For this reason, to in prove themethod of transporting the adults female insects to the wax-producing district, toShorten the time on the way,and to increase the vitality of the male larvae-all these have become the crucial questions in the promotion of wax production. The principal explanation, knowh for centuries, with regard to the impossi-bility to raise the female adults of the insects in the district of wax productionhas been the peculiar fact that the female larvae could not be carried in quickorder to a place over 500 kilometres apart. The present test has proved that al-though the female larvae were, in the greater part, hatched out on the way, therewere still a part of them reaching the destination in safety. Valuable informat-ion was also obtained on the hatching rate of the male and female larvae on theway, the influence of environmental factors on the sex ratio, the different speciesof parasitic enemies, etc.. It is hoped thet the facts thus ascertained will be ofservice to improving the methods of wax production.

    白蜡虫是我国的特产,古代农民远在元朝已有饲养。在过去全国的白蜡年产量约在五万至十万担间,据1918年重庆海关报告有一万一千余担,值银七十七万余海 关两。解放前一、二十年来,由于国民党反动派的不重视和摧残,已逐渐衰落。白蜡是化学工业上的重要原料,用途很广,饲养蜡虫又是西南各省农民的主要副业,而且农民群众已积累了非常丰富的传统经验。因此,为了总结群众经验,发扬科学遗产,改进饲养技术,振兴蜡业,我们希望能引起有关方面的注意和进一步研究,除研究改进白蜡虫的经管技术外,又须注意白蜡在工业上的用途。 白蜡虫的种蜡异地繁荣,在目前已成为自然的形势,而蜡区种虫不能自给,是白蜡业发展上的基本障碍。我们通过本次测验之后,认为我国适于蜡虫(雄虫)繁育的地方很多,如四川、湖南、浙江、安徽、福建、江西、江苏等丘陵地带都可扑虫产蜡,关键问题在于改善运种方法。在目前我国交通运输业已有普遍发展的基础上,只要用航空运种即可在短时间内将种虫运送至全国蜡区。扩大蜡区,增加农民副业收入,发扬我国科学遗产,为国家创造财富,利用益虫为生产服务,在目前已完全有实现的可能。

    In this paper the conditions for the application of thioacetamide in inorganic qualitative analysis are investigated, such as the sensitivity of formation of bismuth sulfide, its hydrolysis in aqueous solution and factors affecting its reaction in acid solution. Thioacetamide is proved to be a satisfactory substitute for H_2S in the analytical laboratory, owing to its simplicity in manipulation, safety, odourlessness and economy. In addition, its sulfide precipitates are easy to filter or centrifuge.

    對硫代乙醯胺在無機定性分析上應用時所受各項反應條件的影響,曾利用硫化鉍生成反應的靈敏度,加以試驗。獲得結果如下:硫代乙醯胺在水溶液中,水解作用最緩。水溶液的pH值,受濃度和溫度的影響不大。酸性溶液,水解较快。在沸水浴中的作用,和硫化氫飽和溶液類似。溶液pH自0至0.5時,對硫化鉍沉澱反應的靈敏度最高;pH值更低時,靈敏度急劇降低。碱性溶液,水解近於完全,靈敏度亦高。硫代乙醯胺濃度,對於反應的靈敏度有顯著影響,但溫度增高後,影響不大。因此在沸水浴中,低濃度的硫代乙醯胺也可使硫化物沉澱。試劑用量,和溶液中產生沉澱的離子總量,成當量關係。應用硫代乙醯胺為陽離子的分組試劑,和H_2S,Na_2S及(NH_4)_2S進行比較,實驗結果,完全一致。應用上列試驗結果,結合現在採用的蘇聯教材,在定性分析實驗課上,採用硫代乙醯胺,獲得滿意結果,有下列各顯著優點:(1)使用方便,設備簡單;(2)實验室空氣清潔;(3)硫化物沉澱易於過濾和洗滌;(4)節省實验時间;(5)節省實验費用。

    The present paper attempts to review the current state of the problem of structural safety by means of the probability and statistical approach, based on the important papers published in Russia, America, and other European countries. At the end of the paper some possible directions of further developments needed in our country are mentioned.

    本文试图初步总结各国有关本题的重要文献,包括苏联、美国以及欧洲各国,同时提出本题今后可能的发展方向。

     
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