The paper puts forward the structure of the generalized zero space of matrix briefly, so the zero space can be understood more clearly.

文章给出了矩阵的广义零空间的结构，使我们对矩阵的广义零空间有更清晰的认识。

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In this paper, a more careful research on linear systems with signed solutions and real matrices with signed zero - space is made.

对有定号解的线性方程组或有定号零空间的实矩阵进行了更深入的研究。

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"When solar panels supply both hot water and space heating, the goal of zero emissions begins to look achievable."

VOA: special.2009.03.25

In the zero gravity of space, we could manufacture in 30 days lifesaving medicines it would take 30 years to make on Earth.

CNN: State of the Union Address

The biggest technological challenge will be transporting the collapsed module through the sub-zero temperatures of space without tearing or cracking any part of it, Miller said.

NPR: Space Station To Get $18 Million Balloon-Like Room

From zero to docking with space stations in ten years is an impressive achievement.

FORBES: NASA Targets April 30th For SpaceX Launch To ISS