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The orifice shape and aperture size is one vibration source on aerostatic bearing.
在空气静压导轨中，节流孔形状和孔径大小是主要振源之一。
The effect of the different aperture size and the area of the membrane, operation pressure were studied.
实验中比较了不同膜管孔径、膜管面积、操作压力等对乳酸杆菌发酵液浓缩效果的影响。
By combining the observational power of six 5-inch aperture telescopes spread over hundreds of feet, the NPOI is able to measure the size of stars down to one milliarcsecond on the sky.
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Future aperture upper limits on balloon-borne telescopes are expected to be some 2.5-meters, about the size of the Hubble Space Telescope.
FORBES: Budgets Nudge NASA Toward Balloon-Based Planetary Science: First Target? Comet ISON
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