无可非议
发表于 2025-3-30 09:45:20
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fluffy
发表于 2025-3-30 13:38:07
Lynn E. DeLisifines a cross section and then calculates the resultant of the stresses acting in it. Instead of describing this resultant by its magnitude, direction and location in space, he usually gives its three components and its moments about three axes. These quantities, commonly known as the normal force,
讽刺
发表于 2025-3-30 18:16:37
Book 1989ere those of the second international conference which was held at the University of Sussex in Brighton, England (McGuigan, Sime and Wallace, 1984). These and the publication of the proceedings from 1974 reflect the interest in stress and tension control that has grown steadily throughout the past d
BRAND
发表于 2025-3-30 22:56:53
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脱水
发表于 2025-3-31 01:08:07
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chemical-peel
发表于 2025-3-31 05:12:00
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