音压

Mainly divided into three parts: 1 delayed sound Pedal : Are British horse (John Broadwood block 1783), usually under the piano is invented the right medial step by step, when delay sound pressure nowadays, usually in the string is Damper immediately lift.

主要分为三个部分： 1 延音踏板：是英国人布劳马于1783年发明，通常是钢琴下最右内侧的踏板，当延音踏板被压时下，平时压在弦上的制音器立即扬起。

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Methods The author sampled Korotkoff's sound signal via microphone, and then according the cuff pressure corresponding to signal appearance and disappearance, the author acquired SBP and DBP. At last, the author validated the creditability by contrasting with the results of auscultatory method.

通过传音器采集柯氏音信号，根据柯氏音信号出现和消失对应的袖带压力得到收缩压和舒张压，将该装置的血压测量结果与人工听诊法测量结果对比，验证结果的可信性。

How quickly it transitions is pretty steep, so you might be able to get away with adding as little as 10Hz to your speaker's lowest reproduceable frequency. Start with 20, then tweak to preference to get the best transition.

有一个好准则就是看看你的喇叭频率响应曲线，看看他最低工作频率是多少、或者是再哪一个频率点输出音压掉到－3db ，找出这个点然后再加上20HZ 把这数值当作重低音分频点。

That said, the crossover's slope (i.e. how quickly it transitions) is pretty steep, so you might be able to get away with adding as little as 10Hz to your speaker's lowest reproduceable frequency. Start with 20, then tweak to preference to get the best transition.

有一个好准则就是看看你的喇叭频率响应曲线，看看他最低工作频率是多少、或者是再哪一个频率点输出音压掉到－3db，找出这个点然后再加上20HZ把这数值当作重低音分频点。

If you have a sound pressure meter, you can take the two readings.

如果你有一个音压的测量器，你可以读到两个数据。

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On a regular 10-hole diatonic, or Marine Band type harmonica, the standard blues note bending technique involves an interaction between two reeds, one blow and one draw. On this style harmonica, only the higher pitched of the two notes from any given reed cell can be bent and then only to a point somewhat above that of the lower pitched reed.

在一般10孔口琴或者Marine Band类口琴上，标准布鲁斯压音是通过两个簧片(一个吸音簧片，一个吹音簧片)的协同振动实现的；所以只有两个音符中的高音符可以被压音，而且压音音符的音高也高于低音音符。

In this study,we took a measurement of sound pressure distribution, sound field variability, and effects of frequency shift on sound pressure levels at reference points of pure tone in the diffuse sound field.

本文通过对纯音声压分布、声场变异以及频率漂移对参考点声压级影响的研究发现，扩散场中纯音声压分布的均匀性虽不如啭音，但在某些范围其能量仍可充分扩散，这些区域声场测试结果受受试者头位改变和／或频率漂移影响轻微。对20名重度感音神经性耳聋患者的测试结果证实了上述结论。

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Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。