P;油漆未干,这2个常用标志代表什么?请写出它们对应的英语表达,

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• 用VB验证歌德巴赫猜想：一个大偶数可以分解为两个素数之和.验证歌德巴赫猜想：一个大偶数可以分解为两个素数之和.试编成将500~1000之间的全部偶数表示为两个素数之和.---
• = 6 And a Mod 2 = 0If (b = 2 Or b = 3) And (c = 2 Or c = 3) ThenPrint a + "=" + b + "+" + cElseFor i = 2 To Sqr(b)If b Mod i = 0 ThenFor t = 2 To Sqr(c)If c Mod t = 0 Then Print a + "=" + b + "+" + cNext tNext iIf i > Sqr(b) ThenIf t > Sqr(c) Then Print a + "=" + b" target="_blank"> 用VB编程序验证哥德巴赫猜想,即一个大于等于6的偶数可以表示为两个素数之和尽量别用太复杂高端的语句,我们很多都没学过Private Sub Form_Click()Dim a As Long,b As Long,c As Long,i As Long,t As Longc = a - bDoa = Val(InputBox("输入不小于6的偶数"))Loop Until a >= 6 And a Mod 2 = 0If (b = 2 Or b = 3) And (c = 2 Or c = 3) ThenPrint a + "=" + b + "+" + cElseFor i = 2 To Sqr(b)If b Mod i = 0 ThenFor t = 2 To Sqr(c)If c Mod t = 0 Then Print a + "=" + b + "+" + cNext tNext iIf i > Sqr(b) ThenIf t > Sqr(c) Then Print a + "=" + b