查询词典 alloy

Tungsten –Copper alloy is the composite of Tungsten and Copper which own the excellent performances of Tungsten and Copper, such as heat-resistant, ablate-resistant, high-intensity,high-density, excellent thermal and electrical conductivity. It is easy to be machined. It is used widely in such industries as engine, electric power, electron, metallurgy, spaceflight and avigation.

钨铜材料是钨和铜的一种合金，综合了钨和铜的优点，耐高温、耐电弧烧蚀、强度高、比重大、导电、导热性好，易于切削加工，并具有发汗冷却特性，作为真空触头材料、电极材料、电子封装材料以及火箭、导弹特殊用途材料等广泛应用于机械、电力、电子、冶金、航空航天等工业。

A mathematical model of axisymmetric compression of semi-solid alloy slurry was described.

描述了一种轴向挤压的半固态合金浆料的数学模型。

For the realization of Chinas railway technology and equipment modernization, to achieve the introduction, digestion, absorption and innovation of key technologies and parts, in this paper, the high-strength aluminum alloy used for axle box of high-speed train is studied as research background.

为实现中国铁路技术装备现代化以及对关键技术及关键零部件的引进、消化吸收、再创新，本文以高速列车轴箱体用高强度铝合金为研究背景，开展应用于我国铁道车辆关键零部件的高强度铸造铝合金的研究。

Babbitt alloy is difficult to adapt higher temperature due to its low softening point.

巴氏合金的软化温度低，抗擦伤性能差。

All results mentioned above make a solid infrastructure for Babbitt alloy to use in industries.

对改性巴氏合金的力学、摩擦学以及成型工艺和检测方法的研究，为该材料由实验室走向工业生产打下了坚实的基础。

The results indicate that back electromotive force increases with increasing current density and decreases by 0.5 V after adding 2% Li2CO3, the feeding period is 15 min measured by the method of electric potential control. Finally, the Al-Li alloy with the lithium content of 7.93% can be obtained by electrolyzing for 3 h at the current density of 0.62 A/cm^2 and at 680 ℃, and the current efficiency can reach 74.1%.

结果表明，反电动势随电流密度增加而增大，加入2%的Li2CO3可使反电动势降低0.5V；通过控制电位法测得加料周期为15 min：在680℃、电流密度为0.62A/平方公分的条件下持续电解3h，最终制得了理含量高达7.93%的铝锉合金，电流效率可达74.1%。

The inhibitive mechanism of sodium barbital for aluminium alloy in 3.5 % NaCl solution was investigated by pentidynamic polarization and SEM.

通过极化曲线及扫描电镜研究了巴比妥钠对硬铝合金（LY12CZ）在3.5％NaCl中的缓蚀作用机制。

ABSTRACT The inhibitive mechanism of sodium barbital for aluminium alloy in 3.5% NaCl solution was investigated by potentiodynamic polarization and SEM.

摘 要 通过极化曲线及扫描电镜研究了巴比妥钠对硬铝合金（LY12CZ）在3.5%NaCl中的缓蚀作用机制。

With the addition of sodium barbial, the inhibitive efficiency increases.'Ihe inhibition of sodium barbital results ￡tunfarming a thin conversion film on the surface of aluminum alloy, which increase the resistance of corrosion.

结果表明，巴比妥钠对铝合金具有较好的缓蚀作用并且能提高铝合金在NaCl溶液中抗点蚀的能力，这种能力主要是通过在铝合金的表面形成不溶怀盐转化膜来实现的。

With the addition of sodium barbial, the inhibitive efficiency increases. The inhibi tion of sodium barbital results from forming a thin conversion film on the surfa ce of aluminum alloy, which increase the resistance of corrosion.

结果表明，巴比妥钠对铝合金具有较好的缓蚀作用，并且能提高铝合金在 NaCl溶液中抗点蚀的能力，这种作用主要是通过在铝合金的表面形成不溶性盐转化膜来实现的。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。