For a domain element, the value of the attribute must start with a plus sign.
对于域元素,该属性的值必须以加号开始。
If defined as NOT NULL, the value corresponds to the start time associated with the most recent transaction (the value of the as ROW BEGIN column).
如果定义为NOT NULL,该值会对应于与最近的事务相关联的开始时间(AS ROW begin列的值)。
Both the parameters start out with a default value of 0, for instance, by default 'REFRESH DEFERRED' MQTs are not considered for optimization.
两种参数都以默认值0开始,例如,默认情况下不为优化考虑' REFRESH DEFERRED ' MQT。
But instead in this chemistry course, I will just tell you the solutions to differential equations. And what we can do is we can start with some initial value of r, and here I write r being ten angstroms. That's a good approximation when we're talking about atoms because that's about the size of and atom.
但在这个课里,我会直接,告诉你们微分方程的解,我们可以给距离r一个初始值,我这里把r取10埃,当我们讨论原子时,这是一个很好的近似,因为原子的尺寸。
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