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铅和铝
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  pb and al
     Variation of Contents of Cd、Hg、As、Cr、Pb and Al in the Fields Applied with Flying Ash and Produced Vegetables
     施灰田及所产蔬菜的镉汞砷铬铅和铝含量变化及影响评价
短句来源
     Determination of Pb and Al in Blood and Hair of Child Using Transverse Heated Graphite Furnace Atomic Absorption Spectroscopy
     横向加热石墨炉原子吸收法测定儿童血液和头发中的铅和铝
短句来源
     Pb and Al in blood and hair of child were determined by transverse heated graphite furnace atomic absorption spectrometry with NH 4H 2PO 4 and Mg(NO 3) 2 as a modifier, which enhanced the temperature of ashing, eliminated the matrix interference and memorial effect.
     采用横向加热石墨炉原子吸收法测定儿童血液和头发中的铅和铝,以磷酸二氢铵和硝酸镁或硝酸镁作基体改进剂,提高了测定铅的灰化温度和灵敏度,消除了基体干扰和记忆效应。
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  “铅和铝”译为未确定词的双语例句
     At last, the dissertation achieved not only the Al and Pb straight inner gear parts by the forming experiments, but also the P-S (power-stroke) curve.
     最后对直齿内齿轮的两段成形过程进行物理模拟实验,分别用铅和铝两种实验材料对直齿内齿轮零件的精锻成形过程进行实验分析,并通过数据采集系统记录零件成形过程中的力—行程曲线。
短句来源
     The metal flow during die forging of fork shape is simulated by plasticine, etc All the results in simulative model tests are sat isfactory
     用铅和铝预测圆筒形锻件的拉拨力:用塑性泥模拟叉形镦件模锻时金属的流动等,模拟试验结果是满意的.
短句来源
     Although the copper lead and aluminium-tin bearing alloyshave higher strength than babbits,but their running-in ability are inferior,bearings of thesealloys require a harder and precisely machined crank shaft as mating part.
     铜铅和铝锡轴承合金虽然强度较高,但它们走合性能差,制成的轴瓦要求较高的曲轴硬度和加工精度。
短句来源
     At present,the metal pollution of worldwide interests are selenium, lead, and aluminum.
     在金属污染的研究方面,最引人注目的元素是硒、铅和铝
短句来源
     Conclusion: (1) long term ingestion of Ca acetate and Ca citrate implicates a risk of enhanced Al and Pb absorption and accummulation in the cerebrum and bone.
     结论 :  (1 )长期摄入柠檬酸钙和醋酸钙有增加铅吸收的危险 ,并可使铅和铝蓄积在骨骼和大脑。
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  相似匹配句对
     LEAD
    
短句来源
     THE PREPARATION OF LEAD FREE GLAZE ON ALUMINIUM ENAMEL
     无搪瓷的研究
短句来源
     Al-Pb Solid Self-lubricating Materials
     -固体自润滑材料
短句来源
     Lead, Indium and Aluminium Superconductive Fixed Point Device
     、铟超导定点器件
短句来源
     Study on Improvement Properties of Lead, Nickel, Aluminum, Zinc and Copper Electrodes
     、镍、、锌铜电极改性的研究
短句来源
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  pb and al
Measurements employing Pb and Al yield the order parameter of nominally pure LaAl2:Δ0=(0.47±0.03) meV=1.63kTc.
      
Mixed-plane-wave effects on the electron-phonon interaction on Pb and Al
      
The content of Pb and Al was at natural background levels, that of Cd higher.
      
Liquid phase co-spray forming (LPCSF) technique was employed to produce Al-Pb and Al-Si-Pb alloys to show that it is possible, using this technique, to distribute lead into very fine-sized particles in Al/Al alloy matrix at low melt temperatures.
      
Seasonal variation of atmospheric 210Pb and Al in the western North Pacific region
      
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The importance of simulative model test on forging processes and the model materials for metal forming are demonstrated friefly. The lorging load in upsclling of cylinder is picdidcd by using plasticine as model material and the load in ironing of cnpforging with punch is predicted by us ing-lead and aluminium. The metal flow during die forging of fork shape is simulated by plasticine, etc All the results in simulative model tests are sat isfactory

简要论述相似模拟试验在锻压工艺中应用的重要性,并简要介绍金属塑性变形用模型材料.用塑性泥预测圆柱镦粗的变形力;用铅和铝预测圆筒形锻件的拉拨力:用塑性泥模拟叉形镦件模锻时金属的流动等,模拟试验结果是满意的.

Babbits are known as the superior bearing metal in anti-friction property,butsince their lower fatigue strength,bearing of these metals are apt to crack and spalling,whenthey serve in high load condition.Although the copper lead and aluminium-tin bearing alloyshave higher strength than babbits,but their running-in ability are inferior,bearings of thesealloys require a harder and precisely machined crank shaft as mating part.The authors hadmodified the lead base bearing alloy CHPbSb 10-6,which was previous worked...

Babbits are known as the superior bearing metal in anti-friction property,butsince their lower fatigue strength,bearing of these metals are apt to crack and spalling,whenthey serve in high load condition.Although the copper lead and aluminium-tin bearing alloyshave higher strength than babbits,but their running-in ability are inferior,bearings of thesealloys require a harder and precisely machined crank shaft as mating part.The authors hadmodified the lead base bearing alloy CHPbSb 10-6,which was previous worked out by them andhas been popularly used up to date.The new developed lead alloy possesses a tensile strength of12% higher than the original metal,it is even stronger than the traditional tin babbit CHSnSb4.5-4.5.The results of vechicle road test of bearings made by this metal when fitted in theDong-Feng EQ 140 truck engine and the model JZ 211B rotary engine are satisfactory.

巴氏合金是减摩性最好的轴承材料,但是其疲劳强度低,在高载荷下轴瓦合金层容易开裂剥落。铜铅和铝锡轴承合金虽然强度较高,但它们走合性能差,制成的轴瓦要求较高的曲轴硬度和加工精度。为此,作者对过去研制目前已普遍使用的铅基合金CHPbSb 10-6作了改进。通过调整合金元素含量,提高其强韧性。新的铅合金具有比原来合金高12%的抗拉强度,甚至高于传统的锡基巴氏合金CHSnSb 4.5-4.5。这种合金的轴瓦装于东风EQ 140载货车发动机和JZ 211 B 转子发动机后的装车试验结果是令人满意的。

According to the similarity condition for plastic deformation, the forming load in upsetting of A_3 steel produced by Harbutt's Plasticine LTD in England is predicted by using plasticine as a model material. The error in predicting forming laod is 9.2%, the similarity being good and the plastieine proving to be an ideal model material. According to π law by Buckingham, the similarity criteria are obtained by dimensional analysis, and the load in ironing of cup-forging with pecnch on hydraulic press is predicted...

According to the similarity condition for plastic deformation, the forming load in upsetting of A_3 steel produced by Harbutt's Plasticine LTD in England is predicted by using plasticine as a model material. The error in predicting forming laod is 9.2%, the similarity being good and the plastieine proving to be an ideal model material. According to π law by Buckingham, the similarity criteria are obtained by dimensional analysis, and the load in ironing of cup-forging with pecnch on hydraulic press is predicted by using lead and aluminium. The difference between the predicted and measured loads in ironing falls within the scope of manufacturing tolerance,the result being satisfactory.

以相似理论为基础的物理模拟方法是理论与实验密切结合,研究金属塑性成形,求解变形力的一种重要方法。本文为探讨相似模拟方法由于予测金属塑性成形的变形力,进行了验证性的实验。根据塑性成形的相似条件,用英国Harutt′s Plasticine公司生产的白色塑性泥作为模型材料予测A3钢的镦粗变形力,误差为9.2%,得到较好的相似,表明塑性泥是理想的模型材料。根据π定理用量纲分析法求出相似判据,以铅和铝模拟圆筒形锻件在立式液压机上拉拨的变形力,其误差均在工程允许范围之内,结界是可取的。

 
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