|
声学.机器与设备噪声发射数据的比较方法
Acoustics.Procedure for the comparison of noise-emission data for machinery and equipment
价格：￥0.00
|
|
|
|
|
|
三轮汽车和低速货车加速行驶车外噪声限值及测量方法(中国Ⅰ、Ⅱ阶段)
Limits and measurement methods for noise emitted by accelerating tri - wheel and low - speed vehicle
价格：￥0.00
|
|
|
|
|
|
工业企业噪声测量规范
Code for measurement of noise in industrial enterprises
价格：￥0.00
|
|
|
|
|
|
机场周围飞机噪声测量方法
Measurement of aircraft noise around airport
价格：￥0.00
|
|
|
|
|
|
声学 听阈与年龄关系的统计分布
Acoustics-Statistical distribution of hearing thresholds as a function of age
价格：￥0.00
|
|
|
|
|
|
声学 耳科正常人的气导听阈与年龄和性别的关系
价格：￥0.00
|
|
|
|
|
|
声学 声压法测定噪声源声功率级 混响场中小型可移动声源工程法 第2部分;专用混响测试室法
Acoustics--Determination of sound power levels of noise sources-using sound pressure--Engineering metheds for small,movable sources in reverberant fields--Part 2: Methods for special reverberation test rooms
价格：￥0.00
|
|
|
|
|
|
声学 声压法测定噪声源声功率级 混响场中小型可移动声源工程法 第1部分:硬壁测试室比较法
Acoustics--Determination of sound power levels of noise soures--Engineering methods for small,movable sources in reverberant field--Part 1: Comparsion method for hard-walled test rooms
价格：￥0.00
|
|
|
|
|
|
声学 声压法测定噪声源声功率级 混响室精密法
Acoustics--Determination of sound power levels of noise sources using sound pressure--Precision methods for reverberation rooms
价格：￥0.00
|
|
|
|
|
|
声学 噪声源声功率级的测定 消声室和半消声室精密法
价格：￥0.00
|
|
|
|
|
