By this method the untouched, unsteady, instantaneous concentration field has been measured.
并利用该方法对烟雾扩散的非定常瞬态积分浓度场进行了实际测量。
Thus, the monitoring values obtatined can only represent the instantaneous concentration of pollutant.
监测值是瞬时浓度值，测次愈少代表性愈差。
Based on the model test, the instantaneous concentration and velocity images in different temperatures and scales are put forwarded. And the range, shape and trend of diffusion are acquired.
本文结合模型试验，得出了不同温升及变率下表面横向浮射流的瞬时浓度场和流速场，进而分析得出随着温度及变率的变化浓度场的扩散范围、形态特点和趋势。
It was also found that higher concentration of rosin in flux is beneficial for shear creep resistance of the joints, while its effect on the instantaneous shear strength is less obvious.
焊剂中较高的松香浓度明显有益于焊点的抗剪切蠕变强度，而对瞬时剪切强度影响不大。
Weighing filtration membrane is often used to get the dust concentration of environment. However, this method is discommodious and can not get the instantaneous transformation of dust concentration.
环境粉尘浓度的测定一般使用滤膜称重方法测得，该方法费时费力，且不能得到瞬时粉尘浓度的变化。
It has the properties of high time-frequency resolution and energy concentration as well as tracking instantaneous frequency etc.
它具有很高的时频分辨率、能量集中性和跟踪瞬时频率等特性。
The planar laser scattering was used to visualize the instantaneous flow while measuring total pressure and sampling the concentration of CO2 were used to obtain the time averaged results.
采用平面激光散射技术对其进行瞬态可视化成像，利用组分采样、测量总压进行时均分析。
The planar laser scattering was used to visualize the instantaneous flow while measuring total pressure and sampling the concentration of CO2 were used to obtain the time averaged results.
采用平面激光散射技术对其进行瞬态可视化成像，利用组分采样、测量总压进行时均分析。
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