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1·Forced ventilation may be necessary in some applications.

某些应用中强制通风是必要的。

2·Forced ventilation during culture promoted growth of plantlets.

在培养阶段进行强制通气可促进小苗的生长。

3·Despite lack of forced ventilation of special envelope seals the running costs are very low.

尽管缺乏特殊表皮的强制通风设备，运行的花费还是很低的。

4·Forced ventilation should be provided when applying paint in confined Spaces or stagnant air.

在狭窄处或空气不流通处施工，必须提供强力通风。

5·The methods of the forced ventilation and mixed ventilation in TBM construction are compared.

对比分析了TBM施工中一般是采用压入式通风和混合式通风的优缺点和适用条件。

6·Electrical wheel gear unit is a DC motor with forced ventilation, that exchanges electrical to mechanical energy.

电动轮设备就是带强制风冷的直流电动机，可将电能转化为机械能。

7·The fin-like appendage on the helmet houses a forced ventilation fan, which blows fresh air over the technician's face to relieve perspiration.

头盔装具上的鳍状物附属物为强制通风片，能够向拆弹专家的面部输送新鲜空气以便排除汗水。

8·Provide adequate ventilation, particularly in roof areas where hydrogen might collect. Forced ventilation may be necessary in some applications.

提供充分的通风，特别是氢容易积聚的屋顶区域。某些应用中强制通风是必要的。

9·The means of sealing by nitrogen aerating and local forced ventilation are used for the leakage source points so as to reduce the explosion class in the gas zones.

通过对煤气加压站煤气泄漏源点的分析和确认，并对其泄漏源点采取充氮密封和局部强制通风等手段，以达到降低煤气区域爆炸等级的目的，并对煤气加压站防爆等级进行了探讨性划分。

10·At present, China is still widely used locomotive with forced ventilation of the traction motor, the continuous power rating to a large extent dependent on the ventilation and cooling effect.

目前我国机车上仍广泛地采用具有强迫通风的牵引电机，其连续定额功率在很大程度上依赖于通风冷却的效果。