pressure level

the biological effect of infrasound is determined by frequency, sound pressure level and the time of exposure to infrasound, etc. what is more, it has something to do with the biophysical and biochemical properties of the organism itself.

次声的生物学效应取决于次声的频率、声压级水平、次声作用时间等参数，并与生物体本身的生物物理学、生物化学等特性有关。

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[ Methods] Instant monitoring and equivalent continuous A-weighted sound pressure level monitoring were applied to monitor the noise intensity in 3 workplaces with incontinuous and unstable noise.

方法选择有噪声作业的3个场所，且噪声是不连续、非稳态噪声，分别用瞬时测定方法和等效连续A声级测定方法对噪声强度进行测定。

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With the introduction of these methods, the gear sound pressure level can be decreased.

使用这些方法可以降低齿轮的声压级。

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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与血压昼夜节律性变化对左室肥厚的发生、发展起着重要作用。

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the relationship between sound power level and sound pressure level radiated by the fan in a suck pipe

吸气管道中风机辐射的声功率级与声压级的关系

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Aggregation of blood pressure level in monozygotic twins families

以同卵双生对家系为模型对血压水平的家族性聚集研究

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The blood pressure of one patient decreased to target level with addition of fractional intravenous injection of 2 mg of phentolamine.

1例加用酚妥拉明2mg分次静注血压降至目标水平。

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While using detune method can minimize the global sound pressure level with the expense of signal collection and feedback control.

解调策略的优点是能将全局声学指标降到最低，但在实际应用中噪声信号的采集和反馈控制代价过高。

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Research of High Performance Mixed Flow Turbine and Three Generation of Tank Engine J130 Pressure Intensifier Development wins the level achievement first prize.

高性能混流涡轮研究和三代坦克发动机J130增压器研制获所级成果一等奖；

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

增压机噪声具有频带宽、低频声强烈，且总声级又相当高的特性。

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Under the pressure level has a certain universal bellows, has formed a series of products.

该压力等级下的波纹管具备一定通用性, 已形成系列产物.

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A revised prediction of the total sound pressure level in an auditorium

厅堂中总声压级的修正计算

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Objective To analyze adolescent blood pressure level and its relation to growth indexes.

目的分析青少年血压水平,了解血压与生长发育指标的关系.

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Measurement of sound pressure level for sound signal appliances by seagoing vessel

GB/T12303-1990海船声号器具的声压级测量

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In the test the pressure and liquid-level in LNG tank container were measured.

试验观测了液化天然气罐式集装箱的压力、液位等变化情况。

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Sound pressure level within the region significantly less than the other regions.

这个区域内的声压级明显的低于其他区域.

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The important factors influenced on engine subjective impressions are loudness, impulsiveness, and frequency characteristics which can be quantified by A-weighted sound pressure level, kurtosis and high frequency level.

结果发现，影响发动机噪声的主观感觉的主要参数为响度特性、脉动性以及频率特性。这些特性可分别用A计权声级、峭度和高频级来加以量化。

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Blood pressure level was significantly correlated with height, weight, chest circumference and BMI.

血压水平与身高、体重、胸围及BMI指数明显正相关。

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

并且，声源室与受声室的体积以及两房间是否对称，皆对房间的隔声有影响。

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Peak-to-peak equivalent sound pressure level.

峰到峰值等效声压级.

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The hypertensive aged with the years of death over 80 accounted for 45. 2% and the aged with normal blood pressure level for 37. 9% in social welfare institution.

福利院者人中活过80岁者，高血压者占45.2%.正常血压者只占37.9%；

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Currently, there are various ways to detect liquid level automatically, such as Differential Pressure Level Measurement, Float style level measurement, Sound level measurement, capacitive liquid level measurement, there are different applications in different environments.

目前液位自动检测的方法多种多样，如差压式液位测量、浮体式液位测量、声波液位测量、电容式液位测量等，在不同的环境下有着不同的应用。

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measurement and calculation of sound pressure level and sound power level.

声压级及声功率级的测量和计算。

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Fire power is to design high-pressure level ( often high-pressure ) fire-fighting water supply system of necessary conditions.

消防电源等级是设计高压 ( 常高压 ) 消防给水系统的必要条件.

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The free portal pressure was maintained at a high level.

门脉压力与PVF非同步变化，压力仍然维持较高水平。

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How many ability is normal blood pressure level be normal?

正常的血压标准是多少才是正常?

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Technical Renovation of the Constant Pressure Water Supply and Accident Tower High Water Level Guarantee System;

为实现水泵运行节能和有消防保障的恒压供水，分析了水泵调速系统原理。

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There is no significant difference of pressure level on employment between collage students in Normal University and Technological University. While there is a significant difference between undergraduates and junior collage students.

师范学院和工学院的大学生就业压力水平没有显著差异；本科学校与专科学校的大学生就业压力水平存在显著差异。

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