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Encyclopedia
工学
竖井施工方案
释
parallel operation
平行作业
竖井施工时,在井筒相邻的两个井段,同时进行掘进与砌壁作业的施工作业方式。
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null infinity
nulling
nulling coronagraph
nulling interferometer
nulling interferometry
nulling optics
nulling phenomenon
null interval
nullipotency
nullisome
nullisomic
nullisomy
nullity
nullity index
nullity of a critical point
nullity of a graph
nullity of a linear mapping
nullity of a linear operator
nullity of a linear transformation
nullity of a link
nullity of a manifold
nullity of a matrix
nullity of an operator
nullity of a space
nullity of a transformation
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