Check that at least one employee with the current id exists in the reference variable to assert that the employee number is valid.
检查是否至少有一个具有当前ID的雇员在reference变量中，以断言该雇员号是有效的。
Because implicit objects are declared automatically, we need only use the reference variable associated with a given object to begin calling methods on it.
因为隐式对象是自动声明的，所以我们只需要使用与一个给定对象相关的引用变量来调用其方法。
The stability of model reference variable structure system with mismatched uncertainties is also analyzed.
本文还分析了具有非匹配不确定性因素的模型参考变结构控制系统的稳定性问题。
The expression context can include objects other than the component. A template reference variable is one such alternative context object.
表达式的上下文可以包括组件之外的对象。模板引用变量就是备选的上下文对象之一。
Similarly, it is possible to read a fresh, updated value of a reference variable, but a stale value of one of the fields of the object now being referenced.
同样，可能读到一个引用变量的最新值，但读取到这个引用变量引用的对象的字段的过期值。
The point of this measurement was making use of infrared signal, on one hand which was the reference variable, on the other hand which was the channel for the data.
这种测量方法的特点在于采用红外光信号，它一方面作为参考变量进行同步测量，另一方面还作为传输数据的通道。
The point of this measurement was making use of infrared signal, on one hand which was the reference variable, on the other hand which was the channel for the data.
这种测量方法的特点在于采用红外光信号，它一方面作为参考变量进行同步测量，另一方面还作为传输数据的通道。
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