1) noise,reduction coefficient
降噪(声)系数
2) noise-reduction coefficient
降噪声系数<声>
3) NRC (noise reduction coefficient)
噪声降低系数
4) Noise reduction coefficient
降噪系数
1.
The result shows that average absorption coefficient and noise reduction coefficient separately equal to 0.
结果表明材料的平均吸声系数和降噪系数分别达0。
2.
The effects of degumming time,bath ration,the concentrations of NaOH,Na2SO3 and Na2SiO3 on the noise reduction coefficient were aslo analyzed by empolying orthogonal experimental design,respectively.
为研究脱胶对大麻纤维吸声性能的影响,选用正交设计法对大麻打成麻进行碱煮脱胶工艺优化,分析了脱胶时间、浴比、NaOH用量、Na2SO3浓度和Na2SiO3浓度对大麻纤维降噪系数的影响。
5) noise figure
噪声系数
1.
Automatic gain control technique in microwave noise figure analysis;
微波噪声系数分析中自动增益调整技术
2.
Noise figure measurement within high temperature superconductor mixer;
高温超导混频器噪声系数测量
6) noise factor
噪声系数
1.
The development of a special noise factor tester
一种专用噪声系数测试仪的研制
2.
The noise factor analyzer’s operation principle and the basic noise factor measurement method, Y factor method, are described.
论述了噪声系数分析仪的工作原理和噪声系数最基本的测量方法——Y因子法。
3.
After analyzing some factors influencing the receiver performance,for example,noise factor,frequency conversion loss,dynamic range,isolation degree,mixing distortion.
从混频器的基本概念出发,分析了混频器设计中的关键技术,如噪声系数、变频损耗、动态范围、隔离度、混频失真等对接收机性能的影响,并从工程角度出发,指出在工程设计中应注意的要点。
补充资料：降噪系数
见吸声材料和吸声结构。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条