velocity analyzer

The three-dimensional particle velocity in a CFB cold model, the turbulent flow energy in the CFB and particle vertical voidage are measured with a three-dimensional particle dynamic analyzer ( PDA).

利用三维粒子动态分析仪（PDA）测量了流化床冷态模型中的三维粒子速度，测量了循环流化床内的湍流能量，也对粒子的轴向空隙率进行了测量。

Thermal environment parameters such as temperature, relative humidity, air velocity and radiant temperature were measured using indoor climate analyzer in a supermarket in Harbin during the summer of 2003. PMV and PPD values were calculated for different areas of the supermarket.

用室内气候分析仪等仪器对哈尔滨市某大型超市夏季室内热环境参数进行了现场测试，详细介绍了现场采用的测试方法和测试仪器，对各楼层不同区域的PMV-PPD值进行了模拟计算和分析。

The electronic moisture analyzer and the constant temperature and humidity equipments were used to study the influences of humidity to alfalfa drying velocity.

采用红外水分分析仪和恒温恒湿箱研究了湿度对紫花苜蓿干燥速率的影响。