定期地进行烘干室清理是必要的以除去可被对流空气吹起的沉积灰尘。
Regular periodic oven cleaning is necessary to remove dust accumulations which can be blown around by the convection air.
本发明所揭示的组合烤箱可以用对流空气、冲击空气和微波能量及它们的各种组合进行工作。
A combination oven that is operable with convection air, impingement air and microwave energy in various combinations thereof.
本文所得到自然对流空气层的最佳间距和各因素变化对于双层屋面隔热效果的影响，都可以为工程应用提供一定的参考。
The study proposed the optimal spacing for natural convection layer and the effects of some factors on the thermal performance of the roof which can give the references for applications.
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