英汉例句

• the sound absorption coefficient of the material was tested by standing wave tube method.

  采用驻波管法测试材料的吸声系数。

• sound absorption coefficient of low-noise asphalt pavement are tested by reverberation way in this paper, compared with standing wave instrument way.

  隧道型公共设施的声环境，可以使用大量具有高吸声系数的吸声构造，铺设于隧道拱壁及轨道铺面，以降低混响时间及噪声。

• the porosity and thickness affect markedly on the sound absorption property of al-si closed-cell aluminum foam: the sound absorption coefficient increases along with increasing porosity;

  铝硅闭孔泡沫铝的孔隙率和厚度对其吸声性能影响显着：吸声系数随孔隙率增加而增加；

• and at the same time, whole frequency sound absorption coefficient is high, and the effect of noise reduction is good. the installation of the utility model is convenient, and is simple to use.

  由于采用布质结构， 因此不会造成对人体健康的损害，同时，全频吸声系数高，降噪效果好，安装方便，使用简单。

• the equivalent sound absorption coefficient of the system can be calibrated by the distilled water. the accuracy of the system can be gotten by the magnesium sulfate solutions of known concentration.

  利用蒸馏水标校测量系统等效的吸声系数，采用已知浓度的硫酸镁溶液来标校测量系统的测量精度。

• this is the ability of the material to absorb sound and is called its sound absorption coefficient .

  它是材料吸收声波的能力，即所谓的吸声率。

• in the present paper, the effects of epr, blowing agent, plasticizer and rock-wool content on the sound absorption coefficient of the foamed materials were also studied and analysed. optimum base…

  还对乙丙橡胶用量、增塑剂用量、发泡剂用量和巖棉用量对材料吸声性能的影响做了研究。

• in the measurement of sound absorption coefficient in random incidence and determination of sound power levels of noise sources, the reverberation room is used very extensively.

  混响室是声学专业的实验室用房，它在测量声波无规入射时材料的吸声系数和测量噪声源的声功率级中得到了广泛应用。

• to measure the sound absorption coefficient in the reverberation room, theoretically it needs the room sound field spreading evenly, but in fact it's not.

  混响法测定吸声系数理论上要求室内声场扩散均匀，但实际的声场扩散并非理想；

• in this paper, the influence of board thickness and pore dimensions on the sound absorption coefficient of the board is studied.

  考察不同厚度、孔径的载体对铸石吸声板吸声系数的影响。

• in the present paper, the effects of epr, blowing agent, plasticizer and rock-wool content on the sound absorption coefficient of the foamed materials were also studied and analysed…

  还对乙丙橡胶用量、增塑剂用量、发泡剂用量和巖棉用量对材料吸声性能的影响做了研究。

• testing and investigation of sound absorption coefficient and sound attenuation show sound-absorbing wool materials have excellent sound absorption properties.

  通过对羊毛吸声材料的吸声系数与声衰减能力的测试，发现其吸声性能优良。

• 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。

• after combining with other material, the ability of sound absorption coefficient is decided by the material which is face to the sound wave.

  层和其他材料后，吸声系数的变化主要由接收声波面材料的特性决定。

• in addition, the sound absorption coefficient of the materials becomes smaller because of the lower thickness.

  热定型后由于材料的厚度有所降低，其吸声系数也相应降低。