Diesel engines emit ultra-fine particles that reach the lungs most easily.

此外，专家还警告，柴油发动机释放的超细粒子污染物相对别的污染物而言更能接触我们的肺。

youdao

At present, our company main products, both series of ultra-fine fibers.

目前我公司主要产品，既超细纤维系列。

youdao

Building Materials Industry: ceramic body, glaze, ultra-fine powder, etc.

建材工业：陶瓷坯料、釉料、超细粉料等。

youdao

He claimed the biggest dig against current HD rigs was their size, citing a need for ultra-fine HD capturing machinery that's uber-small as well before he could shoot an entire film with it.

ENGADGET: Clint Eastwood edges closer to shooting in HD HD

The remaining profitable lines range from binoculars and spectacles 40, 000 lenses a day are made at Aalen, near Oberkochen to monster combinations of quartz lenses, taking months to make, assemble and calibrate, that focus laser beams etching ultra-fine patterns on to semiconductors.

ECONOMIST: German business: Zeissmic shift | The

For old lefties like Mr Talat and Mr Christofias, who take the line that their island's people would get along fine if ultra-nationalists in their respective motherlands would only allow it, this is a resonant, if rather Utopian, call to action.

ECONOMIST: Cyprus