屏障作用 meaning in English

barrier action

The effect of choroid plexus on sequestering cadmium and its patho - morphological chage
脉络丛对铅的屏障作用及其病理形态学观察
Because of the effect sealing for hydrocarbon and nosealing for water , aogula fault has hindered for hydrocarbon to migrate continue from east to west
由于教古拉断裂的封烃泄水作用，使其对齐家古龙坳陷向西运移的油气起到了一定的屏障作用。
Transdermal patches ( which rely on absorption through the skin ) for nicotine delivery have become a mainstay for smoking cessation programs ; however , they have not been a widely effective delivery mechanism for many drugs because the skin acts as a natural barrier
用于尼古丁给药的透皮贴剂（依赖于皮肤吸收）已经成为了戒烟治疗的主要力量；但是，由于皮肤的天然屏障作用，该项技术没有广泛应用于其它药物的有效施药。
Disposable paper or fiber drapes and operating gowns provide satisfactory barriers as a rule but require much more room for storage , are not cost effective , and carry with them the hazard of contamination from manufacturing defects or punctures in the packages
一次性纸或纤维无菌单和手术衣一般情况下能提供满意的屏障作用，但它需要很多额外的空间用于储存，而且需要花费更多的资金，同时它也存在着由于生产过程中的错误或包装袋的破损而导致污染的危险。