vand造句

例句与造句

1. Actually , n - s equation has three unknown functions u , v , p and three equations , now prandtl boundary layer equation has two unknown functions w , vand two equations only , and viscosity terms has partly reduced
   原来有三个未知函u ， v ， p及三个方程，现在只有两个未知函数u ， v及两个方程，且粘性项也少了一些，这些都是简化的地方。
2. It's difficult to find vand in a sentence. 用vand造句挺难的