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体收缩
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  volume contraction
     Design of Insulated Riser of Cast Inserted Die Based on Principle of Volume Contraction of Freezing
     基于体收缩原则的铸造模具镶块保温冒口设计研究
短句来源
     The test results indicated that the higher volume and linear contraction occur in Al 3Li 1Cu Zr alloy. The volume contraction of this alloy will increase with raising pouring temperature and mould temperature. Its linear contraction is about 1 668% which is slightly higher than that of ZL109 alloy(1 2%),but the influence of pouring temperature is relatively minor.
     研究结果表明,Al-3Li-1Cu-Zr合金显示出较高的体收缩和线收缩特性,随着浇注温度和铸型温度的提高,该合金的体积收缩增加,其线收缩为1.668%,略高于ZL109合金的1.2%,其值受浇注温度的影响不大;
短句来源
     Based on the principle of volume contraction of freezing, the designing process of riser fitting to the cast steel inserted die with exothermic covering flux has been studied.
     根据体收缩原则,研究了适用于模具镶块铸钢件加发热覆盖剂保温的冒口设计工艺。
短句来源
     The application has proved that the riser design of cast inserted die was simple and practical with use of volume contraction principle, and the productivity increased effectively.
     实践证明,应用体收缩法设计模具钢镶块铸件的冒口工艺简单、实用,有效地提高了生产效率。
短句来源
  volume shrinkage
     The experiments show that the fluidity, volume shrinkage, line shrinkage reduced with increase of iron content in ZL108 alloy modified with P. The fluidity becomes better with addition of manganese in ZL108 alloy of higher iron content, this is because pernicious influence of needle-like β iron phase can be reduced by Mn.
     试验表明,在磷变质ZL108合金中,随着铁含量的增加,其流动性降低,体收缩、线收缩也减少。 在高铁ZL108合金中加入锰后,可提高流动性,因为锰能够抑制针状β铁相的有害影响。
短句来源
     The volume shrinkage of semi-solid melt in a rheological forming process arises from a sum of such three parts as liquid,solid and solidification contract,which is controlled by the contract coefficient of every parts and solid fraction in semi-solid melt.
     半固态合金熔体的体收缩是液相和固相温度降低带来的体收缩以及凝固相变体收缩3部分之和,其大小主要受各相的收缩系数和固相率控制。
短句来源
  “体收缩”译为未确定词的双语例句
     For SDC powder calcined at 800 ℃ for 2 h,the sintering shrinkage begins at 641.1 ℃ and the total shrinkage is about 11.7% after sintered at 1 300 ℃ for 2 h.
     800℃焙烧2 h的粉体的烧结曲线显示自641.1℃开始烧结收缩,在1 300℃烧结2 h坯体收缩11.7%.
短句来源
     The movements began immediately after dark-to-light transition in both REP and cones, and were completed in 15 min after illumination. The contraction of cone myoids and dispersion of REP pigment granules proceeded at linear rates of 8.9μm/min and 10.8μm/min respectively.
     明适应在15min内完成,没有潜伏期,视锥肌样体收缩与REP色素颗粒扩散速率分别为8.9μm/min和10.8/μm/min。
短句来源
     Compared with normal controls, gastric emptying was significantly delayed(p <0.01), gastric contractive frequency was decreased(p<0. 001) and plasma gastrin concentration was much lower(p<0. 001).
     结果发现,与正常人比较,心力衰竭患者胃排空时间延迟(28.12±6.33min比35.30±10.28min,P<0.01),胃体收缩频率降低(P<0.001),血浆胃泌素水平较低。
短句来源
     Varistor with evenly and small-sized ZnO grain(about 1.0 μm) was prepared after 45 min microwave sintering,the density of ceramic reached 5.01 g/cm~3,and spine phase(Zn_7Sb_2O_(12)) could be detected by XRD in the varistor. It was found that microwave plasma was more suitable to sinter ZnO varistor for its easy control during sintering and normal shrinkage in 3-dimension.
     烧结后,ZnO晶粒细小(约1μm)均匀,相比而言,等离子更有利于压敏电阻烧结。 45 min等离子烧结后,压敏电阻瓷体密度为5.01 g/cm3,ZnO压敏电阻中已有尖晶石相(Zn7Sb2O12)生成,烧结时瓷体收缩均匀,漏电流小,但稳定度差。
短句来源
     The author pointed out that through slowly releasing stress could improve the flexibility of thermal insulation system. Furthermore, anticracking property could be largely enhanced under stress dispersion, waterproof and anti water dissciation measure.
     针对墙体收缩变形大、保温隔热材料系统缺陷和施工工艺等开裂原因,提出“逐层渐变柔性释放应力”的技术路线,提高保温隔热系统的柔韧性,同时辅以应力分散、防水、防失水等措施,大大提高保温隔热系统的抗裂性能。
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  volume contraction
Furthermore, volume contraction during polymerization is considered, as well as the gel and glass effects.
      
Image simulations showed best agreement with experimental images for a model structure with a rigid body shift of 0.21 nm parallel, and a 0.10 nm volume contraction normal to the interface.
      
Profound natriuresis, extracellular fluid volume contraction, and hypernatremia with hypertonic losses following trauma
      
Neither hypokalemia, hyperaldosteronism, diuretic treatment, or volume contraction were present, and a satisfactory explanation for this unusual behavior of renal ammoniagenesis in terms of traditional acid-base physiology cannot be given.
      
Inactive renin was significantly increased during administration of ciclosporin and did not respond to volume contraction.
      
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  volumetric shrinkage
Finally, the optimum process parameters and the influence degree of process parameters on the average volumetric shrinkage and the volumetric shrinkage variation are obtained.
      
Moisture content, volumetric shrinkage and basic density were evaluated from green to oven-dry condition, compressive strength, MOE and MOR were evaluated from green to air-dry condition.
      
Double gates mold reduce the required injection pressure as well as pressure variation, hence a lower volumetric shrinkage.
      
The results showed good modeling of radial, tangential and volumetric shrinkage between 0-22% MC, with explained variance (R2) and predicted variance (Q2) at approximately 0.9, and moderate modeling of longitudinal shrinkage, R2 = 0.67 and Q2 = 0.65.
      
The volumetric shrinkage is noted to be approximately equal to the sum of radial and tangential shrinkages.
      
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  volume shrinkage
The results indicate that the melt temperature has the most remarkable influence on both the volume shrinkage and sink marks criterion weights.
      
On the contrary, calcium-mediated cardiac toxicity was associated with cellular volume shrinkage as a result of the efflux of osmolytes through permeabilized sarcolemmal membranes.
      
It has been found that the percentage of volume shrinkage of the samples, when heated at 300°C for 3 hr, was more (>amp;gt;15%) for OXA, GLY, and DMF and the shrinkage was less (>amp;lt;15%) for AA, NMF, and FA.
      
2 ,6 ,7-Trioxabicyclo[2.2.1] heptane (I) polymerizes to poly ortho ester (Poly-I) at -78°C with opening of one ring and volume shrinkage.
      
The influence of the oligo(tetrafluoroethene) segment length on glass transition temperatures, swelling, volume shrinkage and thermal degradation was investigated.
      
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This paper makes a systematic investigation into the geomorphology, geology, Br geochemistry and hydrochemistry of intercrystalline brine of the Dadong paleolake, and,taking into account the previously obtained isotopic age data, infers the formation, evolution and disappearance of the Dadong paleolake.Some 9000 years ago, because the rivers changed their courses or the climate turned wet, there was a great increase in fresh water supply in the direction of the Tuanjiehu, and henoe a large amount of fresh water...

This paper makes a systematic investigation into the geomorphology, geology, Br geochemistry and hydrochemistry of intercrystalline brine of the Dadong paleolake, and,taking into account the previously obtained isotopic age data, infers the formation, evolution and disappearance of the Dadong paleolake.Some 9000 years ago, because the rivers changed their courses or the climate turned wet, there was a great increase in fresh water supply in the direction of the Tuanjiehu, and henoe a large amount of fresh water flowed into the salt playa from the south and dissolved an area of 200 km~2 with a thickness of l-3m, resulting in the formation of a brine lake. As the original salt playa was composed mainly of halite containing clay, silt and carnallite, during its dissolution the silt and clay were deposited on the bottom, forming clay-bearing silt layer in the lower part of the Dadong paleolake, while the halite and carnallite were dissolved into the water. Later, as the rivers changed their courses again or the weather turned dry once more, the amount of fresh water flowing into the playa became less and less, and the brine lake was continuously evaporated, causing the receding of the lake from north to south. Following the precipitation regularity of saline minerals shown by K~+-Na~+-Mg~(2+)/Cl~-SO_4~(2-)-H_2O system the lake first precipitated halite, thus forming pure halite in the north part of the Dadong paleolake. The subsequent further evaporation of the brine and southward receding of the lake led to the gradual separation of carnallite, giving birth to carnallite layer in the south of the lake. With the unceasing evaporation, the mineralization intensity of the brine grew increasingly higher and the lake was gradually reduced in area and dried out to what it looks like at the present day.In a word, the formation and evolution of the Dadong paleolake proceeded in order of dissolution and transformation of the playa→formation of a brine lake→evaporation, mineral separation, area reduction and final drying out of the lake. In this process, K was concentrated with carnallite layer formed near the fresh water source.

本文通过卫片解释、水化学和Br的地球化学研究以及地质剖面结构分析,论证了达东古湖的形成、发展和消亡过程。文中指出:大约在9000年前,在柴达木盆地达布逊湖以东约200km~2的干盐滩被溶解,形成了一个卤水湖。后来由于河流改道或气候变干旱,湖水被蒸发,湖体自北向南收缩,直到干化。在湖体收缩过程中,盐类矿物按照K~+-Na~+-Mg~(2+)/Cl~--SO_4~(2-)-H_2O五元体系相图所示的规律结晶:石盐析出较早,主要分布在湖的北部;光卤石结晶较晚,集中分布在湖的南部。在这一过程中,钾盐发生了富集,而且富集在靠淡水源比较近的地方。

The nature of defects in vitreous fused silica induced by implanting with 1-17 MeV 35C1 and 19F ions have been investigated and compared with the results obtained after 2 MeV protons or 0.633 MeV γ-rays irradiation using ESR and optical absorption techniques. The surface cracking caused by MeV heavy ion-bombardment was found. No cracks were seen for 2 MeV protons. The contraction in MeV heavy ion implanted vitreous fused silica was observed. The volume change is about 0.36% at an ion fluence (17MeV 35Cl+4) of...

The nature of defects in vitreous fused silica induced by implanting with 1-17 MeV 35C1 and 19F ions have been investigated and compared with the results obtained after 2 MeV protons or 0.633 MeV γ-rays irradiation using ESR and optical absorption techniques. The surface cracking caused by MeV heavy ion-bombardment was found. No cracks were seen for 2 MeV protons. The contraction in MeV heavy ion implanted vitreous fused silica was observed. The volume change is about 0.36% at an ion fluence (17MeV 35Cl+4) of 1×1015 35Cl cm-2.

用电子顺磁共振和光吸收法研究了1—17MeV~(35)Cl和~(19)F离子注入石英玻璃产生的缺陷的特性,并与2MeV质子注入和0.633MeVγ射线辐照的结果作了比较。观察到MeV重离子轰击下石英表面发生分裂和密度变化现象。对于17MeV~(35)Cl~(+4)离子,注入通量约为1×10~(11)Clcm~(-2)下,体收缩率约为0.36 %。

Laser Raman microprobe has been applied to the analysis of volatile components in shrinkage gas bubbles of individual magmatic inclusions in quartz crystal fragments and phenocryst-als from the Mesozoic volcanic complexes of Tonglu and Shouchang, Zhejiang Province. Quantitative analyses are given for CO2,CH4,H2O, CO,H2, N2, H2S, and SO2. In conjunction with the microthermometry and microbarometry data and the chemical compositions of magmatic inclusions, the results permit one to calculate the physico-chemical...

Laser Raman microprobe has been applied to the analysis of volatile components in shrinkage gas bubbles of individual magmatic inclusions in quartz crystal fragments and phenocryst-als from the Mesozoic volcanic complexes of Tonglu and Shouchang, Zhejiang Province. Quantitative analyses are given for CO2,CH4,H2O, CO,H2, N2, H2S, and SO2. In conjunction with the microthermometry and microbarometry data and the chemical compositions of magmatic inclusions, the results permit one to calculate the physico-chemical parameters Ptotal, fo2, fco2,fcH4,fH2O,,fco, and fH2 at the time individual magmatic inclusions were trapped. Based on the data obtained, some physico-chemical conditions for the Mesozoic volcanic magma evolution in the Tonglu and Shouchange areas are discussed.This work shows that this type of studies has become an indispensably new and rising domain in modern magmatic petrology, especially modern volcanic petrology. It can help us to reconstruct the physico-chemistry of the crystallization evolution of a natural magma.

对浙江省桐庐、寿昌中生代火山杂岩石英晶屑及斑晶中单个岩浆包裹体收缩气泡内的挥发组分,借助激光喇曼探针进行分析,定量给出的有CO_2、CH_4、H_2O、N_2、CO、H_2、H_2S、SO_2。 结合岩浆包裹体显微测温、测压和化学成分数据,计算了单个包裹体被捕获时的P_总、f_(O_2)、f_(CO_2)、f_(CH_4)、f_(H_2O)、f_(CO)和f_(H_2)等物理化学参数。并据此讨论了桐庐、寿昌中生代火山岩浆演化中的某些物理化学条体。 研究表明,此类研究已经成为现代岩浆岩石学,特别是现代火山岩石学研究中一个必不可少的新兴领域,它可以帮助我们重溯天然岩浆结晶演化的物理化学历史。

 
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