查询词典 helium

The effects of interatomic potentials on the action of helium in α- Fe are investigated by using molecular dynamics simulations.

采用分子动力学方法研究了不同相互作用势对氦在α-Fe中行为的模拟结果的影响，发现不同的作用势会影响到单个氦原子在α-Fe中的稳定位置，但对氦泡中氦原子的分布无实质性影响。

The performance of closed-cycle helium turbine incorporated with high temperature gas-cooled reactorwhich coupled with recuperating,intercooling and precooling processes is optimized in this paper.

以带有回热器、中冷器、预冷器的高温气冷堆氦气轮机循环为研究对象，用发动机热力计算方法导出循环有效效率表达式和最佳增压比解析式，然后对高温气冷堆氦气轮机循环的热力过程进行分析，揭示了各参数之间的关系。

How to process it affects the equivalent prediction of the entire conductor performance. According to the traditional composite theory, the following several predictions were carried: only consider the functions of the stainless steel conduit outside the cable body, the double insulation and the double shielding layer; the influence of the flexible cable body is neglect, so only consider the function of its internal helium tube; the material nature of the cable body is assumed the isotropism, which the elasticity modulus is 1-10 GPa (here taking 2 GPa); combining the homogenization theory with the composite damage theory.

在传统复合材料理论的基础上，对ITER超导电流传输线导体等效弹性模量进行理论预测：预测一，只考虑电缆体外的不锈钢导管、双绝缘和双屏蔽层；预测二，忽略柔性电缆体的影响，但考虑其内部氦管；预测三，假设电缆体呈各向同性，弹性模量取1～10 GPa；预测四，利用均匀化理论分析电缆体的等效弹性模量，复合材料损伤理论分析超导电缆与中心氦管之间、电缆复合体和不锈钢导管之间界面情况。

Transfer lines for liquid helium should be well insulated and vacuum jacketed.

如果压力源的压力很高，有必要使用减压阀和减压装置。

Herman and S.Skillman with Hartree method. inspected, sysetmatically the change of energy at atomic Valence Orbital from helium to lawrencium.

Skillman用Hartree方法计算得到的原子轨道能的数据(1963)为依据，系统地考察了从氦到铹原子的价层轨道能量变化情况，进而探讨了原子轨道的钻穿作用问题。

In addition to available data, we can conclude that crust contamination of Lutao arc magma has resulted in low helium ratios, high strontium ratios and low neodymium ratios of Lutao lavas.

配合上岩石学的观察，本研究推论绿岛火成岩曾受到地壳混染作用影响，而产生低3He/4He比值、高锶同位素及低钕同位素比值的地化特性。

Helium results of Kuanyinshan clino-pyroxene, Lutao clino-pyroxene and cordierite all indicate the signature of crust contamination.

观音山斜辉石、绿岛斜辉石及绿岛堇青石等样品之氦同位素比值分析结果均指出有地壳混染的讯号。

There is a long standing debate about the magma origin of Lutao. Two different models of crust contamination and source contamination are proposed. Combining helium results with strontium ratios of Lutao lavas, it shows that Lutao arc magma has experienced approximately 5% of crust contamination.

绿岛岩浆成因长久以来存在有地壳混染或是源区混染的争论，本研究利用绿岛斜辉石及堇青石巨晶的3He/4He比值及其母岩浆的87Sr/86Sr比值，得到了绿岛岩浆经历过5%左右地壳混染的结果。

Single-walled carbon nanotubes prepared from alcohol are reacted with methanoic acid for 35 min at 200℃ and under protection of helium to form short SWCNTs.

碳纳米管具有优异的力学、光学、电学和吸附等性能[1-5]，引起了广泛持续的关注，至今仍是多个领域科学家研究的热点之一。

M3. In the cause of the experiments, the divers breathed helium-oxygen mixture from HJ-801 diving apparatus and temperature was scored for the divers' recta, body surface and surrounding environment.

为了研究低水温潜水对人体生理与安全减压的影响，作者进行了深度为60一120m、水温在巧。0一19 。0℃的低水温环境人体潜水试验，潜水员穿湿式潜水服，呼吸氦氧混合气。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。