利用返回差条件，借助配方方法讨论非线性系统达到最优调节所必须满足的充要条件。
A necessary and sufficient condition for nonlinear systems to achieve optimal regulator is given by using the return difference condition and completion of the squares argument.
它接收两个输入变量，并返回这两个数值的差。
It takes two input variables and returns the difference of those two Numbers.
本周被遣返回老挝的这些难民们之前已流离至位于碧差汶府(Phetchabunprovince)的另一处临时营，并期望获得国际庇护。
Those bundled back to Laos this week had drifted to another makeshift camp in Phetchabun province, hoping to claim international asylum.
首先初始化序列图像，然后确定搜索区域，计算最小绝对差，返回图像的坐标值，进行坐标变换，最终计算得出两帧图像的位置变化；
First, initialize the image sequence, and then define search area, compute the MAD, return the coordinates of image, transform the coordinates, at last, get the change of two images.
下午的晚些时候我们将返回华欣和差安。
翻译：测量是通过向双绞线注入差模信号(DM)，然后测量同一对双绞线返回的共模信号(CM)。
The measurement is made by injecting a differential mode signal (DM) into a twisted pair, then measuring the common mode signal (CM) returned on that same twisted pair.
回波损耗测试是通过向双绞线注入DM(差模信号)然后测试返回的DM信号，然而TCL是测试CM信号。
Except a return Loss measurement is made by injecting a DM signal into the pair and measuring the DM signal returned. Here we are measuring the CM signal returned which is TCL.
回波损耗测试是通过向双绞线注入DM(差模信号)然后测试返回的DM信号，然而TCL是测试CM信号。
Except a return Loss measurement is made by injecting a DM signal into the pair and measuring the DM signal returned. Here we are measuring the CM signal returned which is TCL.
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