hooded roof ventilator 盔状的屋顶通风机
centrifugal roof ventilator 离心式屋顶通风器
hooded d roof ventilator 盔状的屋顶通风机
roof extract ventilator 屋顶抽风机
roof side ventilator 车顶侧方通风器
Taking the NJ1061 and NJ1041 trucks as examples, the designing method of a roof ventilator fora sealed cab is presented.
以NJ 1061、NJ 1041等车型为例，介绍了密封型驾驶室顶通风口的设计方法。
The Church is naturally ventilated, with fresh air supplied at floor level, and exhausted through a continuous roof ventilator.
教堂内设有自然通风系统，新鲜空气从地层进入，并由屋顶的抽风机排出室外。
After a presentation of the construction and moving paths, a kinematic equation for roof ventilator is given, and its components structurally designed based on analysing the parameters.
通过结构及运动轨迹分析，建立了运动方程。在参数分析的基础上，设计了各总成及部件的结构。
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