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In this study the change of brightness, chromatism and infra red spectra of compressed China fir during heat treatment in air or heat treatment in vacuum are studied.

该文重点研究了杉木压缩木材在经过空气介质中热处理和真空中热处理后明度、色差和红外光谱的变化。

As far as the relationships between brightness, chromatism and recovery are concerned, there is little difference between heat treatment in air and heat treatment in vacuum. The fixation degree of compression set is closely related to the change degree of color.

2就热处理过程中杉木试材的明度、色差与回复率之间的关系而言，两种热处理方式之间的差异不大；热处理中木材变定的固定程度与木材颜色的变化程度有关。

The results are:(1) The brightness of the specimens will decrease and the chromatism will increase with the prolongation of time of heat treatment. Compared to heat treatment in vacuum, the specimens have less brightness and more chromatism after being heat treated in air, under the conditions of same temperature and time of heat treatment.

该研究的结论为：①在相同条件下，随着热处理时间延长，木材明度减小，色差增大；空气介质中热处理和真空中热处理相比，在处理温度和时间相同的情况下，前一种方法处理后的木材明度更小，色差更大。

The water-saturated and boiled specimens of China fir are hot pressed with the average compression rate of 50%. Then they are heat treated in a common oven or in a vacuum oven, with the temperatures of treatment of 140,160,180,200,220℃, respectively. Then the brightness, chromatism, infra red spectra of the specimens are measured and discussed.

为了探讨热处理过程中杉木压缩木材的材色变化规律，以及材色和木材化学主成分变化之间的关系，该研究测定了空气介质和真空中热处理杉木压缩木材(热处理温度范围140～220℃，时间范围0～36h)的明度、色差以及红外光谱。

ABSTRACT : A new kind of vacuum generator circuit breaker is introduced.

提出了1种采用新型并联断口的真空发电机断路器。

The electrical performance of vacuum circuit breaker relies on the mechanical characteristics of its operation mechanism.

真空断路器的电气性能与其操动机构的机械特性之间关系密切。

This feature gives a reasonable explanation for the mechanism of CAS. The phase velocity of diffraction fields for uniform plane wave on a circular aperture has been investigated. It is shown that diffraction can result in subluminous phase velocity at certain points of optical field in vacuum.

如果相对论电子能够注入到这一通道内，那么它与激光场间的相移就可能变得非常小，从而能够长时间地保持在加速相中得到极高能量。

Using citral and acetone as starting materials, the aldolcondensation was carried out, and then the final product wasobtained by distillation under vacuum.

以柠檬醛和丙酮为起始原料进行醇醛缩合反应，经减压蒸馏得到最终产物。

Wier pump and clack, steam vacuum ejector, injector clack and stop valve and Wier pump lubricator pot.

威尔泵和唠叨，蒸汽真空喷射器，注射器和截止阀瓣和威尔泵润滑锅。

Third, the specific heat of some materials is far form what we expect in classical statistical mechanics(especially for the energy of oscillation of the electromagnetic field in a vacuum).

此外，人们发现，所有的物质粒子都可以在适当的条件下显示出波的性质。

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。