According to the analysis, the radial of small ring expands quantity D=r-r0, with time the relation of T can use multinomial 2 times to describe, namely
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Among them, а , β decides constant to wait for; Tm expands for sample annulus the time when the quantity achieves maximum D-Dm.
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Will above а , β takes the place of (6) type gets:
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To Zhouxiang meet an emergency has
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Or write into:
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Have
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Get then
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Have with manage
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