初中化学教材中“空气中氧气含量测定”实验，按教材方法操作、效果甚差。
The way to test oxygen content in the air, which is introduced in Junior Textbooks, doesn't work well.
它让人想起1913年的军械库艺术博览会。那次展会将欧洲的现代艺术，包括马塞尔·杜尚风评甚差的作品“下楼的裸女”一并带入美国。
It evokes the 1913 Armory Show, which introduced European modern art, including Marcel Duchamp's scandalous "Nude Descending a Staircase", to America.
气体的浓度差极化使气相分离效果变坏，在高通量、精分离中甚明显。
Gas concentration polarization can impair the performance of membrane gas separation activity. That phenomenon becomes more conspicuous in high-flux, fi - ning separation processes.
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