Objective to study and determine the appropriate air flow rate of a positive pressure respiratory protective hood.

目的研究并确定一种正压呼吸防护头罩合适的送风量。

youdao

The protective cap or hood covering the spore case of a mossor related plant.

藓帽盖在苔藓或相关植物芽孢体上的保护帽或盖子。

youdao

This paper introduces the raw materials, formulation, preparative course and application method about PVA protective film in the range hood of household oil-smoke drawing machine.

介绍了家用抽油烟机油污防护膜的原料、配方、制备过程和使用方法。

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Patrick's car careened back into David Ragan, flipping her hood over the windshield and shredding the left front fender as protective foam from the driver's side door flew onto the track.

NPR: Edwards Ends Long Drought At Phoenix