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污染输出
相关语句
  “污染输出”译为未确定词的双语例句
     Quantitation of Pollutant Transfer by Farm-land Runoff in Fuling Area.
     涪陵地区农田径流污染输出负荷定量化研究
短句来源
     Anxiety and Suggestion of a Chinese Scholar——An Open Letter about Pollution Exportation between Nations
     一位中国学者的忧虑和建议——关于国际间污染输出问题的一封公开信
短句来源
     Since our country take the policies of reforming and opening, the developed countries have transferred much pollution to our's, including exporting rejects, sealing polluted equipments and products, setting up polluting enterprises.
     自我国改革开放以来,发达国家对我国大量污染输出,主要有废弃物直接出口、污染设备和产品转移以及污染行业输出三种形式。
短句来源
     The risks of heavy metals submerge and the condition of non-point source pollution in TGRA was analyzed.
     同时对三峡库区耕地重金属淹水和非点源污染进行风险分析,指出库区开展淹水重金属形态与非点源污染输出研究意义.
短句来源
     The non-point source pollution was quantified by export coefficient method, and the domestic discharge was estimated by demand-supply method.
     采用非点源污染输出系数法定量研究氮流,城市生活污水中氮的排放采用人口氮素摄入-排放法来估算.
短句来源
  相似匹配句对
     Contamination Caused by Heavy Metal
     重金属污染
短句来源
     Fresh Water Pollution
     淡水的污染
短句来源
     output of the model.
     模型输出
短句来源
     Output of the Lagrangian Statistics of Turbulence in Air Pollution Meteorology by Using Mesoscale Weather Prediction Model
     用中尺度模式输出污染气象的拉格朗日湍流统计量
短句来源
     Quantitation of Pollutant Transfer by Farm-land Runoff in Fuling Area.
     涪陵地区农田径流污染输出负荷定量化研究
短句来源
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Objective To test the application quality of some medical linear accelerators (L1NACs) in our country and learn the state of their application quality. Methods ACRS 3D water tank made by MED TEC company and an UNIDO S dosimeter made by PTW company are used to test 48 medical LINACs application quality. 20 performance parameters such as electronics interlock, rotation center, indicator error, beam energy, field flatness and symmetry, X ray contamination in electron beams, precision of output dose, stabilization...

Objective To test the application quality of some medical linear accelerators (L1NACs) in our country and learn the state of their application quality. Methods ACRS 3D water tank made by MED TEC company and an UNIDO S dosimeter made by PTW company are used to test 48 medical LINACs application quality. 20 performance parameters such as electronics interlock, rotation center, indicator error, beam energy, field flatness and symmetry, X ray contamination in electron beams, precision of output dose, stabilization of output dose, linearity of output dose are tested. Results Among the 12 mechanical performance parameters, for domestic LINAC, 10 parameters' qualification rate are under 80%, in which 7 parameters' qualification rate are under 50%, and the lowest qualification rate is only 26%; for first hand imported L1NAC, one parameters' qualification rate is 78%, and all the other are above 80%;the mechanical performance parameters of second hand imported L1NAC are similar to that of the domestic. Among the 8 beam performance parameters for domestic LINAC, 6 parameters' qualification rate are above 90%; for first hand imported LINAC, 7 parameters' qualification rate are above 80%,as well as second hand imported LINAC Conclusion The mechanical performance parameters of most domestic LINAC and second hand imported L1NAC are not good enough to meet the need of precision radiotherapy.

目的对我国部分医用直线加速器进行应用质量检测 ,了解我国医用直线加速器的应用质量现状。方法对48台医用直线加速器 ,使用美国MED -TEC公司生产的CRS三维水箱检测系统和PTW公司的UNIDOS剂量仪进行检测 ,共检测性能参数包括电气联锁系统、等中心、指示误差、射线能量、射野平坦度和对称性、电子线照射时的X线污染、输出剂量精度、输出剂量稳定度、输出剂量线性等20项。结果12项机械性能参数中 ,国产加速器有10项参数合格率在80%以下 ,其中有7项参数合格率在50%以下 ,最低达26 %。而进口一手加速器除一项参数合格率为78% ,其它11项参数合格率均在80 %以上 ,进口二手机机械性能基本同国产加速器 ;8项射线性能参数中 ,国产加速器有6项参数合格率在90%以上 ,而进口一手加速器有7项参数合格率在80%以上 ,进口二手加速器的合格台数也较多。结论国产医用直线加速器和进口二手加速器的机械性能较差 ,很难满足精确放疗的需要。

Distribution of heavy metal of Hg,As,Cd,Cr,Cu,Zn,Ni and Pb in cultivated soil in TGRA has been studied in the present investigation.Statistical results showed that the cultivated soil in Chongqing area was polluted by heavy metals. Contrast with the standards of soil environment quality and background, Cd has far most excess in the several heavy metals. As a whole, the content of heavy metals in dry farm land was higher than that in paddy soil, such as purple and yellow soil. There was a significantly positive...

Distribution of heavy metal of Hg,As,Cd,Cr,Cu,Zn,Ni and Pb in cultivated soil in TGRA has been studied in the present investigation.Statistical results showed that the cultivated soil in Chongqing area was polluted by heavy metals. Contrast with the standards of soil environment quality and background, Cd has far most excess in the several heavy metals. As a whole, the content of heavy metals in dry farm land was higher than that in paddy soil, such as purple and yellow soil. There was a significantly positive correlation among Cd,Pb,Cu,As,Zn. The soil quality of some submerged counties is appraised by comprehensive pollution index. Only the one county reached middle pollution level and the others subtle polluted or not. The risks of heavy metals submerge and the condition of non-point source pollution in TGRA was analyzed.

通过对三峡重庆库区16个市、县(区)旱地和水田土样分析、统计、评价,研究了库区耕地土壤主要重金属元素分布特征。结果表明,库区耕地土壤有不同程度污染,重金属As、Cd、Cu、Ni的含量均有超标,Cd有最大超标;旱地土壤重金属含量略高于水田,紫色土略高于黄壤,各采样点重金属含量差异大;重金属元素Cd、Pb、Cu、As、Zn间存在极显著正相关,土壤污染有复合污染趋势;主要淹水区县土壤环境质量评价结果显示,仅巫山县污染综合指数评价为中污染,主城区、开县为轻微污染,涪陵区、长寿区、奉节县为警戒级,其余为安全级;耕地土壤中重金属元素均未超过土壤环境基本容量,能够保证作物品质和农业持续发展。同时对三峡库区耕地重金属淹水和非点源污染进行风险分析,指出库区开展淹水重金属形态与非点源污染输出研究意义.

In order to acquire accurate modal parameters for flexible spacecraft, an on-orbit identification method based on output-only subspace algorithms is presented. Its feature is that even if the input signals are nonwhite noise and hard to measure, the modal parameters of the flexible spacecraft can still be identified only making use of the noise-corrupted output signals. Two numerical examples taken from Hubble Space Telescope ( HST) and Mini-Mast flexible space structure are used to demonstrate the validity...

In order to acquire accurate modal parameters for flexible spacecraft, an on-orbit identification method based on output-only subspace algorithms is presented. Its feature is that even if the input signals are nonwhite noise and hard to measure, the modal parameters of the flexible spacecraft can still be identified only making use of the noise-corrupted output signals. Two numerical examples taken from Hubble Space Telescope ( HST) and Mini-Mast flexible space structure are used to demonstrate the validity and practicability of the proposed method.

为了在轨获得精确的挠性航天器模态参数,在子空间辨识算法的基础上,给出了一种仅利用输出信号的挠性航天器模态参数在轨辨识算法。其特点是输入信号不必是白噪声,且当输入信号不易测量时,只利用被噪声污染的输出信号就能进行模态参数的在轨辨识。通过对哈勃太空望远镜(HST)和MiniMast 空间挠性结构两个算例的仿真,验证了算法的有效性和实用性。

 
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