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The principle of determination of sound absorption coefficient of materials by transfer function method is introduced.

介绍了在阻抗管中采用传递函数法测量材料吸声系数的原理，详细介绍了使用双传声器进行测量的方法，指出了测试的频率范围取决于阻抗管的管径大小和传声器布置的位置。

Then the absorption coefficient and transmission loss of materials in air and in water was discussed respectively.

再来则是分别就空气中与水中探讨材料的吸音与隔音性能。

Methods Use a standing wave tube to measure the sound absorption coefficient of many kinds of grain.

采用驻波管法测量了多种粮食的吸声系数。

The fluorine-containing polymer has an absorption coefficient of less than 4.0 mum- at a wavelength of 157 nm.

这些含氟聚合物的吸光系数在157纳米波长小于4.0μm -1 。

Objective To explore the possibitlity to obtain new photosensitizers with high absorption coefficient in red band of the spectra.

目的 研究获得具有红光区高吸收系数的新型光敏剂的结构及其光生物活性。

Compared with iodine, Gold has a larger atomic number and X-ray absorption coefficient.

金与碘相比，有着更高的原子序数和X射线吸收系数。

The sound absorption coefficient decreases with the increasing of the coating thickness.

随着涂层厚度的增加，吸声系数总体呈逐渐减小的趋势。

A theoretical method to calculate the absorption coefficient of the multi-layer absorber is proposed in this dissertation.

本论文基于主动吸声降噪的特点，围绕其若干关键技术问题，在理论和计算等方面进行了研究与探讨。

The temperature coefficient of foundation absorption edge decreases with increasing of component, and increases with increasing of substrate temperature.

Pb1-xGexTe材料的吸收边温度系数随组分的增大减小，但随基板温度的上升而增大。

Based on the preliminary work, absorption coefficient of the material was measured using impulse method in a circular pipe.

在先前的研究基础上，利用管道脉冲法测量材料的吸声系数。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。