不变约束_有道手机词典

constraint independent of time

1. 不变约束: constraint independent of time | nonvarying constraint | invariant constraint
2. 无约束不变式: unrestricted invariant
3. 不变值约束: fixed-value restrictions

1.在平面形状优化基础上，在机翼容积不变约束下，再采用剖面翼型优化设计，通过机翼剖面细微变化弱化较大马赫数下的激波、减小激波阻力。
In the second design step, improvement of wing's aerodynamic characteristic is mainly depended on the weakening of shock which reduces wave drag during the wing section optimization.
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2.一致性：事务保持数据上定义的所有不变的属性(如完整性约束)。
Consistency: a transaction preserves all the invariant properties (such as integrity constraints) defined on the data.
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3.而它们中的一些保持恒定不变，因变量按某种自然的方式变化，从而维持约束条件。
Some of them are held fixed, and then some dependent variable does whatever it must so that the constraint keeps holding.
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