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塌方
由于开挖卸荷或其他外界扰动下,地下工程围岩或掌子面岩体某一部分或全部发生突发性或渐进性的失稳塌落现象。
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plane and volume hologram
plane angle
plane angle of a dihedral angle
plane angle of dihedral angle
plane antenna
plane at infinity
plane circular restricted three-body problem
plane component
plane-concave lens
plane configuration
plane control survey
plane-convex lens
plane coordinate
plane coordinates
plane cubic
plane curve
plane curve location
plane cutting
plane dihedral angle
planed immunization
plane division by circles
plane division by ellipses
plane division by lines
plane domain
plane electromagnetic wave
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