Especially discusses the ways of choosing a proper air change rate.
讨论了换气次数的正确选取方法。
Analyzes the effects of indoor dust loading and of fresh air rate to the air change rate in turbulent flow clean rooms.
分析了乱流洁净室净化空调设计中室内发尘量和新风比对换气次数的影响。
A reason for this is that RH buffering by materials is feeble and short lived compared with temperature buffering when the air change rate is large.
原因是当空气交换量大时，和热缓冲材料相比湿度缓冲材料的功能较弱，而且寿命不长。
This paper analyzes and simulates the effect of the air change rate per hour (ACH) on contamination diffusion airflow field in turbulent clean-room of hole-board ventilation by using CFD.
针对孔板送风的乱流洁净室，运用C FD软件对不同换气次数条件下的气流组织和污染物扩散进行数值模拟分析。
This rate of change of momentum of the air is allowed for by apparent mass components, the magnitudes of which must be determined experimentally.
空气动量的变化率可用表观质量分量描述，这些分量的大小必须通过实验来确定。
The calculation models of the effective area, the rate of change of the effective area and the rate of change of the effective volume are established for the diaphragm air spring.
在膜式空气弹簧结构与计算模型的基础上，建立起膜式空气弹簧有效面积、有效面积的变化率及有效体积变化率的计算模型。
Regardless of hysteresis of air system, the main factor that influences dynamic response of fuel cell is diffusion concentration polarization, which restricts the change rate of stack current.
不考虑空气系统的时间滞后，影响电池动态响应时间的主要因素为扩散浓差极化，它限制了电流的变化率。
As a parachute canopy moves unsteadily through the air, its equations of motion must include the rate of change of momentum of the air in which it is immersed.
当降落伞在空气中作非定常运动时，空气动量的变化率必须包括在降落伞的运动方程中。
Air has a low density and great compressibility. The volumetric flow rate of air in air drilling varies with pressure and temperature, which in turn, change with WLL depth.
气体不仅密度低，而且具有很大的可压缩性，所以空气钻井的体积流量将随压力和温度变化，而压力和温度又随井深变化。
Air has a low density and great compressibility. The volumetric flow rate of air in air drilling varies with pressure and temperature, which in turn, change with WLL depth.
气体不仅密度低，而且具有很大的可压缩性，所以空气钻井的体积流量将随压力和温度变化，而压力和温度又随井深变化。
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