air barrier

基本解釋

Inflatable packaging uses air pressure to secure and hold products in place inside the shipping container and provides an air barrier of cushioning.
充氣包裝利用氣壓來牢固及維持貨件于托運(yùn)容器內(nèi)的位置，并提供一個氣墊。
Theseresults suggested that the concentration curve was determined mainly by the THOtransport across blood-air barrier in the primary pulmonary circulation.
結(jié)果說明呼出氣氚水濃度曲線是氚水經(jīng)肺首次循環(huán)時透過血-氣屏障的轉(zhuǎn)移所產(chǎn)生。
Arithmetic mean thickness and harmonic mean thickness of blood-air barrier thickened with age increasing, and there were remarkable difference between neighboring two groups(P0.05).
黃牛的氣-血屏障的算術(shù)平均厚度和調(diào)和平均厚度均隨年齡增加而不斷增厚，且相鄰兩個組之間差異顯著（P〈0.05）。

And in 2007 a survey of around 200 space companies by the Air Force Research Laboratory cited export controls as the highest barrier to foreign markets.
ECONOMIST: Space technology
In addition, EPA's and USDA's relevant authorities cover a range of natural resources and their supporting ecosystems, including waters, sediments, barrier islands, wetlands, soils, land management, air resources, and drinking water supplies.
WHITEHOUSE: Executive Order -- Gulf Coast Ecosystem Restoration
Preventing this process using an iron-free, corrosion-resistant alloy barrier is particularly important in a city like Boston, where the air is damp and laden with salt water.
ENGADGET: Engineering a better bicycle with DBC City Bike Design Alt