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。
Improve the formation pressure level can effectively improve the condensate oil recovery.
提高地层压力保持水平，可以有效提高预测期末凝析油的采出程度。
Regularities of pressure on surface with sound pressure level and frequency are also given.
并给出了模型表面压力随声压级及频率变化的规律。
A stereo effect is achieved through differences in sound pressure level between two microphones.
立体声效果是通过在不同的声压水平之间的两个话筒。
The maximum sound pressure level standards of Beijing Olympic Organizing Committee is introduced.
引用奥组委对最大声压级的具体要求。
With ability to program these devices, reaching a threshold of pressure level indicates it is time to change the element.
通过对这些设备进行编程，当压力水平达到临界值时，就表示需要更换元件了。
Impulse sound pressure level and sound power level and sound power increase along with the increasing of detonation frequency.
脉冲声压级、声功率级、声功率随爆震频率的提高而提高。
The sound pressure level changes acutely in shock intersection, and shocks outside nozzle and exhaust plume cause strong noise.
声压级在相交激波点附近出现剧烈变化，喷管出口处的激波和排气羽流造成强噪声。
Based on the masking properties of the psychoacoustic model, we then derive the required sound pressure level of the watermark.
基于心理声学模型的掩蔽特性，可以得出水印被要求的相应的声压级。
And stepwise regression analysis demonstrates that BMI and the diastolic blood pressure level, the exercise situation show correlation.
逐步回归分析显示：BMI与舒张压水平、锻炼情况呈正相关。
The function of the optimum sound pressure level of the rolling bearing noise is established especially for applications to engineering.
为了在工程上应用，特别建立了最优滚动轴承噪声声压级函数。
Blood pressure variability in the acute stage of stroke is greater, and blood pressure level is associated with the prognosis of stroke.
急性卒中的血压波动较大，血压水平与卒中患者预后相关。
Besides, the influences of sound pressure level, residence time and initial total number concentration on agglomeration were investigated.
同时，研究了声压级、停留时间和气溶胶初始浓度等参数对声波团聚的影响。
Hereby may be achieved that largely all cooling functions occurring at the same pressure level are integrated in a common pressure vessel.
由此可以使得几乎所有的在同一压力水平下发生的冷却功能集成在一共用的压力容器中。
For often work under high pressure gear pump, the working pressure shall be lower than the rated pressure of the pump 1 ~ 2 pressure level.
对于经常工作于较高压力下的齿轮泵，其工作压力应比泵的额定压力低1 ~2个压力级。
Objective To study the relation of blood pressure level and rates of abnormal clinical electrocardiogram (ECG) in healthy testing population.
目的探讨体检人群血压水平及其与心电图异常检出率的关系。
A global transfer function (g) representing a spatial average of sound pressure level in the room generated by the loudspeaker (L1) is determined.
确定表示由扬声器(L1)生成的在房间中的声压水平的空间平均值的全局传递函数(G)。
The sound pressure level at certain distance from the outer shell in flow field is obtained when the vibration velocity of the inner shell is known.
在已知内层壳体振动速度的情况下，计算出流场中距外层壳体一定距离处的声压级。
Booster compressor noise has the characteristics of wide frequency band, intense low frequency 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。
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.
在相同的频率和声压级水平下，次声的损伤作用与次声的暴露时间并非呈线性关系。
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.
通过平均声压级和声功率级的测试验证了复合钢板试制的油底壳的降噪效果。
Conclusion The serious extent of hypertension patients' carotid artery internal membrane lesion is influenced by blood pressure level, aging and blood lipids.
结论：高血压患者颈动脉内膜的病变程度受血压水平、年龄及血脂等因素的影响。
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.
如果耳朵要连续承受声压为85分贝以上的噪音，则必须加以保护，以减低它所承受的声压。
Higher sound pressure level (SPL) favored both collision efficiency and agglomeration kernel, so acoustic agglomeration increased in the higher-intensity acoustic field.
声压级增大不仅使团聚核函数增大，也增大了碰撞效率，使高声压级时的团聚更有效。
For level instruments required to send signal remotely, diaphragm sealed differential pressure level transmitter, displacer transmitter and radar transmitter shall be selected.
远传指示液位仪表一般选用双法兰差压液位变送器、浮筒液位变送器及雷达液位变送器等；
Objective to evaluate the type and incidence of arrhythmia in patients with essential hypertension and it correlation with blood pressure level and cardiovascular risk factors.
目的探讨首次诊断的原发性高血压患者心律失常的发现率、类型及其与高血压水平和心血管危险因素的关系。
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.
将声学原理与电学原理结合起来，提出了一种根据空间声压级确定输入到音箱中的电功率大小的计算方法。
Change of soil pressure is the result of interaction between soil and retaining structure. Soil pressure level and distribution model are related to retaining structure deformation.
土压力变化是土与挡土结构之间相互作用的结果，土压力的大小与分布模式同围护结构变形量和变形方式有关。
Change of soil pressure is the result of interaction between soil and retaining structure. Soil pressure level and distribution model are related to retaining structure deformation.
土压力变化是土与挡土结构之间相互作用的结果，土压力的大小与分布模式同围护结构变形量和变形方式有关。
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