The piston moves up and down in the piston chamber primarily in response to changes in intake manifold vacuum.

活塞主要因进气歧管真空度的变化而在活塞腔内上下移动。

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Vacuum sputter coating has better stability than smearing film while smearing film has better response electric characteristics than vacuum sputter coating.

真空镀膜稳定性比涂膜好，涂膜的响应、导电性比真空镀膜好。

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Measuring slightly over one tenth of a millimeter, the ball moves toward a smooth plate in response to energy fluctuations in the vacuum of empty space.

这颗直径稍比百分之一公分大的球，会在真空能量起伏的感应下，移向表面平坦的平滑区域。

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And MessageLabs reports that another large botnet called Cutwail, unaffected by the McColo shutdown, has increased its efforts in response to the "spam vacuum" of recent weeks.

BBC: Spam on rise after brief reprieve

And in that vacuum, cuts and austerity are given the appearance of a legitimate response.

FORBES: So Does Italy Now Aim To Take The Euro Down?