1) descending flow of sap
下行液流
2) descending liquid
下行液体
3) declensional ventilation
下行风流
1.
In order to find more effective control measurements for declensional ventilation mine fire,the catastrophe potential function of airflow reversal in a declensional ventilated mine fire was deduced by using catastrophe theory,which indicates the airflow reversing process has discontinuous characteristics.
为了寻求下行风流火灾的有效控制途径,应用突变理论推导了下行通风主干风路风流逆转的突变势函数,揭示出其逆转过程具有突变特征,分析了下行风流逆转具有的突跳、分叉、不可达、滞后、多模态等多种非线性特征,实验验证了下行风流逆转的突变过程。
4) downflow
['daunfləu]
并流下行
1.
The mathematical model for the gas-solid heat transfer in cocurrent downflow circulating fluidized bed(CDCFB)reactor was proposed in this paper.
提出了并流下行循环流化床反应器气 -固传热模型 ,并采用稳态传热的实验方法 ,测定了并流下行循环流化床反应器中 ,不同操作条件下 ,轴向颗粒温度分布及气、固相进、出反应器的温度 ,进而利用Matlab工程数据处理软件回归求得模型参数即气 -固轴向截面传热系数及表观传热系数的值 ,并由实验结果回归得到模型参数与操作条件的经验关联式 。
5) Cocurrent downflow
并流下行
1.
Cocurrent downflow circulating fluidized bed is a new type of reactor possessing more effective gas solids contact, lower axial backmixing etc.
并流下行式循环流化床是一种具有气固接触效率高及轴相返混小等优点的反应器，有广阔的应用前景。
2.
The mathematical model for the gas-solid adsorption mass transfer in a cocurrent downflow circulating fluidized bed(CDCFB) reactor is proposed in this paper.
建立了并流下行循环流化床反应器气固吸附传质模型,并采用稳态示踪的实验研究方法,测定了下行床中气相示踪剂浓度的轴向分布,进而利用Marquardt多元非线性回归方法求得了模型参数即轴向扩散系数和传质系数的值。
3.
A feasible Laser Doppler Velocimetry technique based on Amplitude Discrimmation has been used to determine the local gas and solids velocity simultaneously, which can lead to the local slip velocity between the gas and solids in a cocurrent downflow circulating fluidized bed (CDCFB).
利用幅值鉴频的激光多普勒测速技术,同时测定并流下行循环流化床（CDCFB）中的气体和固体的局部速度,由此可以获得气固间的局部滑落速度。
6) Downward air fow
下行气流
补充资料：下行
1.文字自上而下直写直排的形式。汉字在改为横写横排以前，书写和印刷都是从上到下的，故称"下行"。 2.公文从上级发往下级。 3.船从上游向下游行驶。 4.指声音从高到低。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条