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单词
foster's formula
释义
Foster's formula
Foster's formula
[
′fȯs·tərz ′fȯr·myə·lə
]
(mining engineering)
The empirical formula
R
= 3√(
DT
) for determining the radius
R
of a shaft pillar, where
D
= depth in feet and
T
= thickness of lode in feet.
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更新时间:2024/9/22 17:40:45