More severe cases may be treated with a CPAP machine, so named because they maintain constant positive air pressure to the wind pipe to help users breathe easy at night.

严重一点的患者可能就得用CPAP机来治疗了，人们给它取这个名字是因为它能够给气管提供稳定的空气压力，借以帮助患者在夜间呼吸。

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The plate in the rear wheels, after transporter position to maintain a level, in order to prevent the machine movement.

上平板运输车之后，在后轮的位置上要保持水平，以防止机器移动。

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Describes techniques that administrators can use to maintain security policy on a machine or in an enterprise.

说明管理员可用来维护电脑或企业安全性原则的技术。

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Many of the systems currently in use do not maintain the basic principle of containment that prevents the breach of a single machine from having an impact on other parts of the system.

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