Water is man 's indispensable material condition for existence.

水是人类生存所必需的物质条件。

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It is not satisfied general condition for existence of a stable limit cycle.

给出了其极限环存在性、唯一性以及稳定性的证明。

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The perpetual rotation of the ellipsoid body, its condition for existence and stability are also determined.

确定椭球体的永恒转动、它们的存在条件及稳定性。

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Apomorphine has been in existence for some time and was originally injected into patients with Parkinson's Disease - a condition which affects coordination.

BBC: Parkinson's Disease drug 'cures impotence'