The Physalia is a self-sufficient ecosystem that generates all the power it needs from the sun and works to reduce water pollution through bio-filtration .

这个巨型浮囊内部有一套自给自足的生态系统，其利用太阳产生自身所需的能源，并通过生物过滤来减少水源污染。

youdao

Usually, oil supply system is of oil-filtration function, which could only function in its self-circulation and the filtration of regenerator and oil recharge is beyond its operation scope.

虽然通常抗燃油供油装置本身带有滤油功能，但其只能参与供油装置内油的自身循环，无法满足再生和补油的需要。

youdao

We develop XY-500 style fire resistant filter for hydraulic cleanness and its regeneration, which can filter online and suck oil to its self oil tank for filtration, making filter as a spare tank.

我公司开发了针对抗燃油清洁度及再生处理的XY-500型抗燃油专用滤油机，既可以在线循环过滤又可以将油吸入自带的油箱进行过滤，使滤油机作为备用油箱。

youdao

Now, that's a low bar, given -- (laughter.) But there was a team from Tennessee that had designed a self-powered water filtration plant so that homes in Appalachia could have access to clean water.

WHITEHOUSE: Education, Innovation & The Economy