Conclusion CPAP ventilation after laparoscopy may improve pulmonary oxygenation and reduce PPCs in aged patients.

结论腹腔镜手术后用CPAP，能改善老年患者肺氧合功能，减少肺部并发症。

youdao

The plasma photonic crystals (PPCs) are artificially periodic array composed of alternating the plasmas and dielectric materials.

等离子体光子晶体是等离子体和介质构成的人工周期性结构。

youdao

If you're trying bring traffic to your site naturally (without PPCs), getting the right keywords on the right pages is only a portion of the job.

如果你正在尝试为网站带来自然流量(不用PPC)，放置正确的关键词在正确的页面是这项工作的最佳方法。

youdao

PPCs will have the power to hire and fire chief constables and set local police objectives and the budget - but chief constables will remain in charge of the direction and control of the police force.

BBC: Police Reform Bill: Consideration of Lords' amendments