解序列一般说是收敛的.The resulting sequence will usually converge.实际要用的项数的多少取决于收敛的快慢程度.The number of terms actually used depends upon the rapidity of the convergence.若满足了这个条件,我们就说有限差分法是收敛的.We will say that a finite - difference me...
他的头发又长又乱，脸上胡子拉碴。He had long unkempt hair and a stubbly chin.他头发凌乱，没刮胡子，脸色苍白。His hair was disheveled, and his face was unshaven and gray.他几天没刮胡子，脸上胡子拉碴。His face was covered with the stubble of several nights....
The idea is to encourage people to get to know their neighbours.其目的是促使人们结识邻居。How can faculty improve their teaching so as to encourage creativity?教师们如何才能改进教学以激发创造性呢？The paper'sprice rise will encourage readers to de...