• Under the same frequency and same sound pressure level, the infrasound damage on the brain didn't show linear correlation with the acting time of infrasound.

    相同频率和声压级水平损伤作用次声暴露时间并非线性关系

    dict.cnki.net

  • By Combining acoustics with electrics, and based on sound pressure level a calculating method was presented to determine the magnititude of electric-power inputting to sound-box.

    声学原理电学原理结合起来,提出一种根据空间声压确定输入音箱中的电功率大小的计算方法

    dict.cnki.net

  • Besides, the influences of sound pressure level, residence time and initial total number concentration on agglomeration were investigated.

    同时研究声压停留时间气溶胶初始浓度等参数声波团聚影响

    danci.911cha.com

  • The maximum sound pressure level standards of Beijing Olympic Organizing Committee is introduced.

    引用奥组大声压级具体要求

    www.dictall.com

  • Regularities of pressure on surface with sound pressure level and frequency are also given.

    给出了模型表面压力声压频率变化规律

    dict.cnki.net

  • Conclusion: The night-time blood pressure level and blood pressure circadian rhythm play an important role in the occurrence and development of left ventricle thickness.

    结论高血压病患者夜间血压水平血压昼夜节律性变化肥厚发生发展起着重要作用

    dict.cnki.net

  • The function of the optimum sound pressure level of the rolling bearing noise is established especially for applications to engineering.

    为了在工程应用特别建立滚动轴承噪声声压函数

    dict.cnki.net

  • For level instruments required to send signal remotely, diaphragm sealed differential pressure level transmitter, displacer transmitter and radar transmitter shall be selected.

    指示液位仪表一般选用双法兰液位变送器浮筒液位变送器雷达液位变送器等;

    www.mahoupao.com

  • Socks according to the pressure level can be divided into health care and treatment, health care is the 1 stage, treatment type is the 2-3 level, higher levels, the greater the pressure.

    袜子按照压力等级可以分为保健型治疗型,保健型1治疗2-3级数压力越大

    www.524w.com

  • The age of onset was younger, the rate of overweight or obesity and blood pressure level was higher in group(P<0.05).

    高血压家族史患者无家族史患者比较,发病年龄血压水平偏高超重肥胖发生率较高P<0.05)。

    dict.cnki.net

  • With the measurement of average sound pressure level and sound power level, the noise reduction result of the oil pan made by sandwich steel plate was proved.

    通过平均声压和声功率测试验证了复合钢板试制底壳降噪效果

    dict.cnki.net

  • This text introduced a kind of questionnaire which can be used to measure the pressure level which the university student face at present, and how to manage the pressure scientifically.

    本文介绍了测量大学生当前面临压力水平问卷以及如何科学管理压力的方法。

    www.chemyq.com

  • The system can be mainly used for acoustic measurement such as the measurement of sound pressure level and sound power level and the spectral analysis of the sound and vibration.

    特别适用声压功率声学测量以及声学振动各种分析,具有广阔应用前景。

    d.wanfangdata.com.cn

  • For the pressure level of both theory and in practice, or are still in the exploratory stage, community workers are relatively new.

    当前,社区工作者还属于新生事物,对于压力水平的研究无论理论层面还是实践层面处在探索阶段

    www.fabiao.net

  • The paper concludes that noise pressure level emitted from the headstock of a lathe is closely related to its idle running Empirical formula has been derived for calculating machine noise.

    本文提出机床床头辐射噪声声级与其空载功率密切关系导出计算机床噪声经验公式

    dict.cnki.net

  • It was also found that the sound pressure level difference was lower in equal, symmetric room than in unequal, asymmetric room configurations.

    并且声源与受体积以及两房间是否对称,皆对房间的隔影响

    dict.cnki.net

  • We get and analysis the data of the reverberation, noise and acoustic pressure level of the Conference Hall and Lecture Hall in some northern university in measurement.

    实测分析北方大学甲报告厅会议厅混响时间、景噪声数据

    www.dictall.com

  • So some developed countries with external thermal insulation layer flat, and allowed to use iron float shall be used to beat, can only use wood float shall be used to rub pressure level off.

    因此一些发达国家保温面层抹平不允许抹子拍打只能抹子平整

    www.jmhbjn.com.cn

  • If, for example, mid-range drivers are frequently damaged, the whole system must be operated at a lower sound-pressure level, or additional mid-range drivers must be added.

    例如如果一个系统中,中间某个驱动器时常损坏整个系统必须运行一个压制的低音电平中,或者一个附加中间驱动器必须增加的。

    shzhsky.blog.163.com

  • Protection of ear to reduce sound pressure on it is necessary if the ear is to be subjected to noise at a sound pressure level more than 85 decibels continuously.

    如果耳朵连续承受声压为85分贝以上噪音必须加以保护减低承受的声压。

    www.hhfw.com

  • Booster compressor noise has the characteristics of wide frequency band, intense low frequency sound and considerably high total sound pressure level.

    增压噪声具有频带低频强烈,且声级又相当特性

    www.dictall.com

  • Such as gas flow pressure pump is external, gas is inhaled to smoke gas mouth, Positive pressure from the exhaust mouth gush out, Such as pressure level, etc.

    比如气体流向负压外部气体吸入是从排气出去比如气压高低

    detail.b2beer.com

  • The surface gravity, which is defined from the 1 bar pressure level in a gas giant's atmosphere, is 90 percent that of Earth's and the speed needed to reach low orbit is lowest of all the gas planets.

    表面重力这个气体巨人大气层气压水平限制范围,地球百分之90并且需要达到轨道速度所有气体行星最低水平

    article.yeeyan.org

  • The surface gravity, which is defined from the 1 bar pressure level in a gas giant's atmosphere, is 90 percent that of Earth's and the speed needed to reach low orbit is lowest of all the gas planets.

    表面重力这个气体巨人大气层气压水平限制范围,地球百分之90并且需要达到轨道速度所有气体行星最低水平

    article.yeeyan.org

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