若是减少吸入的呼吸流量，微粒子在气管内的沈积效率也会随之增加。
Decreasing in breathing frequency could improve the particle deposition efficiencies. Nonethless, decreasing respiratory volume may enhance the particle deposition efficiency.
便携式超声波流量计的超微粒子- 20，人类工程学的先进设计，以便在超微粒流行基于同样- 10，具有重大的规模缩小。
The Portable Ultrasonic Flowmeter UFP-20, based on the same, ergonomically advanced design so popular in the UFP-10, features significant size reduction.
便携式超声波流量计的超微粒子- 20，人类工程学的先进设计，以便在超微粒流行基于同样- 10，具有重大的规模缩小。
The Portable Ultrasonic Flowmeter UFP-20, based on the same, ergonomically advanced design so popular in the UFP-10, features significant size reduction.
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