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lead distribution
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  铅分布
     The sintering copper lead alloy layer has fine gain even lead distribution,the relative density above 90%,σ b≥150N/mm 2,and HB≥70.It has excellent antifriction property and wear resistance too. The bi metallic interface,which has τ b≥120N/mm 2,combines metallurgically with Fe and Cu diffusing mutually.
     本研究烧结铜铅合金层组织晶粒细小,铅分布均匀,相对密度90%以上,抗拉强度≥150N/mm2,硬度HB为70,具有良好的减摩性和耐磨性,双金属结合区为Fe、Cu互相扩散的冶金结合,双金属剪切强度≥120N/mm2。
短句来源
     The difference of the distribution of lead in soil and dust is obvious; the partial pollution is serious, the lead distribution rule in soil and dust tends to be identical, lead content in Tiexi district is highest, next is the content in Heping district, the joint of Yuhong and Huanggu districts and Dadong industrial district.
     沈阳市土壤和灰尘中铅分布空间差异大,局部污染比较严重,灰尘中铅与土壤中铅的分布规律趋于一致,铁西区铅浓度最高,其次是和平区、皇姑区和于洪区的交界处以及大东工业区;
短句来源
     The absorption effect of lead by pla nt from soil and the influences of gro wing plants on lead distribution ove r the soil were studied through the experiment of potted cole.
     采用油菜盆栽试验方法,研究了作物对土壤中铅的吸收效应及植物的栽种对土壤铅分布的影响。
短句来源
  使配电
     In competitive market, retail prices are comparatively fixed, while wholesale prices and load demand are variable, which lead distribution utilities facing huge risks.
     市场条件下零售电价相对固定而批发市场电价和负荷需求经常波动,使配电公司面临较大的风险。
短句来源
  “lead distribution”译为未确定词的双语例句
     A model on lead distribution in soil along a chengyu highway
     成渝高速公路某段路旁土壤铅含量分布的研究
短句来源
     In order to discuss clinical significance of J wave, we analysed relationship among ECG amplitude, lead distribution and ventricular late potential in J wave-positive patients with cardiac disease (Group Ⅰ , n =58) and those without (Group Ⅱ , n =90).
     为探讨J波临床意义,分析J波阳性的心脏病(n=58)和非心脏病(n=90)患者的心电图J波振幅、分布导联及与晚电位阳性的关系。
短句来源
     Results (1)Almost there were the same lead distribution in the case and control groups.
     结果  (1)病例和对照组从体表心电图测得的最大QT间期、最小QT间期几乎均集中在相同的导联 ;
短句来源
     A series experiment were conducted to study the growth responses, the physiological reaction of Chenopodium ambrosioides L. to lead stress, and the influences of growing plants on lead distribution over the soil, the results were as follows:The seed germination rate was slightly increased at 50mg · L~(-1) lead treatment, and then greatly decreased when exposure to higher lead concentrations, it was only 53 percent of control group under 450mg · L~(-1) lead treatment.
     以土荆芥为实验材料,通过土培、水培等系列实验研究了土荆芥对铅的吸收效应和抗性生理、土荆介的生长对土壤中铅形态分布的影响等,初步探讨了该植物用于铅污染土壤修复的可行性,本研究的主要结果归纳如下:
短句来源
     Lead sources in brown rice, lead distribution in soil and rice, lead chemical formls in soil and their change with time, availability of soil Pb for rice and effect of soil pH on the Pb adsorption are researched in air-water-paddy system near city and town using 210Pb. Test soil is light acid meadow brown soil.
     以~(210)PbCl_2为示踪剂,研究了辽河中下游城市近郊微酸性草甸棕壤稻田系统中铅的来源、土壤和水稻体内Pb的分布、土壤Pb对水稻的有效性、Pb形态随时间的变化和土壤pH对Pb吸附的影响等问题;
短句来源
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  相似匹配句对
     ON THE DISTRIBUTION OF
     关于{x/n}的分布
短句来源
     LEAD
     铅
短句来源
     Accumulation and distribution of lead in Macrobrachium nipponense
     铅在日本沼虾体内的分布和积累
短句来源
     The Profit Distribution in the "Lead-Member" Strategic Alliance
     “盟主-成员”型战略联盟的利润分配
短句来源
     ,normal distribution.
     值服从正态分布;
短句来源
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  lead distribution
Thermodynamic modeling of lead distribution among matte, slag, and liquid copper
      
It is established that in order to prepare material with a uniform lead distribution and high mechanical properties the sintering duration should not exceed 5 min.
      
Energy Dispersive X-ray Spectroscopy (EDX) was applied for microchemical analysis and the lead distribution through the film depth was determined with a step-scanning method.
      
While considerable information on lead distribution in the cells of terrestrial plants has been collected, little is known about lead localization in the cells of the aquatic plant.
      
Lead distribution in corn seedlings (Zea mays L.) and its effect on growth and the concentrations of potassium and calcium
      
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Lead sources in brown rice, lead distribution in soil and rice, lead chemical formls in soil and their change with time, availability of soil Pb for rice and effect of soil pH on the Pb adsorption are researched in air-water-paddy system near city and town using 210Pb.Test soil is light acid meadow brown soil. The Pb proportion derived from the soil, airborne dust and irrigation water in rice grain and transportion pathway to brown rice are investigated. Transportation coefficients of Pb in this...

Lead sources in brown rice, lead distribution in soil and rice, lead chemical formls in soil and their change with time, availability of soil Pb for rice and effect of soil pH on the Pb adsorption are researched in air-water-paddy system near city and town using 210Pb.Test soil is light acid meadow brown soil. The Pb proportion derived from the soil, airborne dust and irrigation water in rice grain and transportion pathway to brown rice are investigated. Transportation coefficients of Pb in this system are determined by tracer experiment. It is indicated that the Pb concentration in rice root, the Pb concentration and its distribution in the soil are important factors which effected Pb transporting to rice.Based on the simulation test, mathematical model computed soil environmental capacity of Pb in this system is Put forward. Soil environmental capacity of Pb computed using this model in the system is 1600?700 ppm, i. e. 3.6~3.8 Vna. tne result is correspondence between computed, and observed. The mathematical model is also used to compute soil environmental capacity of those heavy metal corresponding respectively with 203Hg,

以~(210)PbCl_2为示踪剂,研究了辽河中下游城市近郊微酸性草甸棕壤稻田系统中铅的来源、土壤和水稻体内Pb的分布、土壤Pb对水稻的有效性、Pb形态随时间的变化和土壤pH对Pb吸附的影响等问题;论述了水稻分别从土壤、大气降尘以及灌溉水中所吸收的Pb在糙米中各自所占的比例,并指出了Pb向糙米运转的途径;示踪模拟实验确定了Pb在这个系统中的转移系数;指出水稻根中Pb浓度、土壤Pb浓度和分布是影响Pb向稻米运转的主要因素。 在示踪实验的基础上,提出了一个计算大气-水-土壤-水稻系统Pb土壤环境容量数学模式。估算出了该系统在糙米Pb含量小于1ppm时,土壤Pb的环境容量值是1600~1700ppm,即每公顷3.6~3.8吨。这个数值和盆栽实验结果相符合。该模式还可应用于~(203)Hg,~(115+115m)Cd、~(73)As、~(65)Zn、~(51)Cr、~(65)Ni、~(60)Co等示踪核素所对应的重金属土壤环境容量的计算。

Lead sources in brown rice, lead distribution in soil and rice,lead chemical forms in soil and their change with time, availability of soil Pb for rice and effect of soil pH on the Pb adsorption are researched in air-water-paddy system near city and town using 210Pb. Test soil is light acid meadow brown soil. The Pb proportion derived from the soil, airborne dust and irrigation water in rice grain and transportion pathway to brown rice are investigated.Transportation coefficients of Pb in this system...

Lead sources in brown rice, lead distribution in soil and rice,lead chemical forms in soil and their change with time, availability of soil Pb for rice and effect of soil pH on the Pb adsorption are researched in air-water-paddy system near city and town using 210Pb. Test soil is light acid meadow brown soil. The Pb proportion derived from the soil, airborne dust and irrigation water in rice grain and transportion pathway to brown rice are investigated.Transportation coefficients of Pb in this system are determined by tracer experiment.It is indicated that the Pb concentration in rice root,the Pb concentration and its distribution in the soil are important factors which effected Pb transporting to rice.Based on the simulation test,mathematical model computed soil environmental capacity of Pb in this system is put forward.Soil environmental capacity of Pb computed using this model in the system is 1600-1700 ppm, i. e. 3.6-3.8t/ha. the result is correspondence between computed and observed. The mathematical model is also used to compute soil environmental capacity of those heavy metal corresponding respectively with 203Hg, 115+115m Cd, 65Zn, 51Cr, 65Ni, 60Co etc.

以~(210)PbCl_2为示踪剂,研究了辽河中下游城市近郊微酸性草甸棕壤稻田系统中铅的来源、土壤和水稻体内Ph的分布、土壤Ph对水稻的有效性、Ph形态随时间的变化和土壤pH对Pb吸附的影响等问题;论述了水稻分别从土壤、大气降尘以及灌溉水中所吸收的Pb在糙米中各自所占的比例,并指出了Pb向糙米运转的途径;示踪模拟实验确定了Pb在这个系统 中的转移系数;指出水稻根中Pb浓度、土壤Pb浓度和分布是影响Pb向稻米运转的主要因素。在示踪实验的基础上,提出了一个计算大气-水-土壤-水稻系统Pb土壤环境容量数学模式。估算出了该系统在糙米Pb含量小于1ppm时,土壤Pb的环境容量值是1600~1700ppm,即每公顷3.6~3.8吨。这个数值和盆栽实验结果相符合。该模式还可应用于~(203)Hg,~(115m+115m)Cd、~(73)As、~(65)Zn、~(51)Cr、~(65)Ni、~(60)Co等示踪核素所对应的重金属土壤环境容量的计算。

In this paper, the characteristic function of coal consumption is used as the objective function in establishing a muthematic model of optimum lead distribution of boilers which are in operation side by side. Furthermore, we have discussed the general method for solution of the mathematic model.

本文以煤耗特性函数为目标函数,建立了并列运行锅炉负荷优化分配的数学模型,并探讨了教学模型的一般求解方法。

 
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