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new level preparation
释义
new level preparation
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新水平准备
释
new level preparation
新水平准备
为形成新的开采平台所需要做的准备工作总称。包括出入沟、开段沟的掘进和为再下一水平能正常掘进出入沟和开段沟所需最小空间的扩帮。
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second comparison test
second complementary law
second component
second conjugate space
second contact
second control
second cosine formula
second cosine theorem
second cosmic velocity
second countability axiom
second countable space
second countable topological space
second Cousin problem
Second creation
second critical magnetic field
second cultivated machinery
second curvature
second demographic transition
second derivative
second derivative test
second derivative test discriminant
second development
second difference
second differential
second differential parameter
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